Let me tell you about the time I was searching for comfort on a chilly evening. The kitchen filled with the scent of sautéed onions and garlic, bringing back memories of cozy family dinners long past. It was the perfect moment to whip up a Keto Broccoli and Cauliflower Au Gratin With Sausage! This dish is a brilliant twist on a classic comfort food, combining savory sausage with tender vegetables enveloped in a creamy cheese sauce. Not only does it satisfy cravings, but it also keeps those pesky carb counts down, making it ideal for anyone on a keto diet. Plus, it’s a breeze to prepare—perfect for busy weeknights when you want something hearty without the hassle. Have you ever enjoyed a dish that made you feel wrapped in a warm hug? Join me as we dive into the delightful world of low-carb comfort food!

Why Is Keto Broccoli Au Gratin Amazing?
Creamy, Comforting Dish: This Keto Broccoli and Cauliflower Au Gratin merges rich flavors with a guilt-free twist, making it an ideal option for cozy evenings.
Quick and Easy: You can whip this dish up in under an hour, perfect for those busy weeknights.
Flavorful Variations: Easily modify it to suit your tastes—try swapping in different cheeses or adding veggies like spinach for even more nutrition.
Meal Prep Friendly: Prepare portions ahead of time, savoring delicious leftovers that heat up beautifully. Pair it with a refreshing Spicy Mango Salad for a complete meal!
Crowd-Pleaser: Whether for a family dinner or entertaining friends, this dish will have everyone coming back for seconds, all while following a keto lifestyle!
Keto Broccoli and Cauliflower Ingredients
For the Vegetables
• Cauliflower Florets – Adds texture and volume; use pre-chopped for convenience.
• Broccoli Florets – Provides color and nutrition; lightly steamed for a tender bite.
For the Sausage
• Sliced Smoked Sausage – Contributes protein and heartiness; can be omitted for a vegetarian option.
For the Cheese Sauce
• Butter – Used for sautéing onions, enhancing flavor.
• Diced Onion – Adds sweetness and depth to the cheese sauce.
• Minced Garlic – Infuses aroma and flavor into the dish.
• Cream Cheese – Creates a creamy base for the sauce; must be softened for ease of mixing.
• Heavy Whipping Cream – Enriches the cheese sauce, making it decadently creamy.
• Shredded Cheddar Cheese – Melts beautifully for a rich, cheesy flavor; feel free to mix varieties.
This indulgent Keto Broccoli and Cauliflower Au Gratin with Sausage is not only delicious but also a healthy choice for anyone watching their carb intake!
Step‑by‑Step Instructions for Keto Broccoli and Cauliflower Au Gratin With Sausage
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This ensures that the oven is hot enough to cook the Keto Broccoli and Cauliflower Au Gratin evenly, allowing it to bubble beautifully and develop a golden crust. Setting this up first gives you the ideal cooking environment for the creamy flavors that are about to come together.
Step 2: Cook the Sausage
In a large skillet over medium heat, add sliced smoked sausage and cook for 5-7 minutes or until browned and crispy. Stir occasionally to ensure even cooking, and watch for a nice caramelization, which will enhance the flavor of your dish. Once done, remove the sausage from the skillet and set aside, leaving behind the savory drippings.
Step 3: Sauté the Vegetables
In the same skillet, melt 2 tablespoons of butter over medium heat. Add diced onion, sautéing for 3-4 minutes until translucent. Next, stir in minced garlic and cook for an additional 30 seconds, until fragrant. This step brings out the rich flavors that will complement the cheese sauce and vegetables in your Keto Broccoli and Cauliflower Au Gratin.
Step 4: Prepare the Cheese Sauce
In a medium saucepan, combine the softened cream cheese and heavy whipping cream. Whisk over low heat for about 3-5 minutes until the mixture thickens slightly, making it smooth and creamy. Gradually add in shredded cheddar cheese, continuing to stir until the cheese melts completely, becoming a luscious sauce. Season with salt and pepper to taste for added depth.
Step 5: Combine Ingredients
In a large mixing bowl, combine the cooked cauliflower florets, broccoli florets, and crispy sausage. Pour the delectable cheese sauce over the mixture, using a spatula to ensure everything is thoroughly combined. The creamy sauce should envelop the vegetables and sausage, creating a rich, comforting blend for your Keto Broccoli and Cauliflower Au Gratin.
Step 6: Bake Until Golden
Transfer the combined mixture into a 9×9 baking dish, spreading it out evenly. Place it in the preheated oven and bake for 15-20 minutes until the top is bubbling and golden brown. Keep an eye on it, as the golden color and aroma will signal that your Keto Broccoli and Cauliflower Au Gratin is ready to be removed from the oven, showcasing its inviting texture.

How to Store and Freeze Keto Broccoli and Cauliflower
Fridge: Store leftovers in an airtight container for up to 3 days to maintain freshness and flavor; simply reheat in the oven for best results.
Freezer: Freeze individual portions in a well-sealed container for up to 2 months. This makes it easy to enjoy a keto comfort meal whenever you crave it!
Thawing and Reheating: Thaw overnight in the refrigerator before reheating. To reheat, place in the oven at 350°F (175°C) for about 20-25 minutes until heated through, ensuring your cheesy layers stay creamy.
Make Ahead Options
These Keto Broccoli and Cauliflower Au Gratin With Sausage are ideal for meal prep enthusiasts! You can prepare the cheese sauce and sauté the vegetables up to 24 hours in advance; simply refrigerate them separately to maintain flavor and texture. The cooked sausage can also be stored alongside the veggies. When you’re ready to bake, combine everything in a baking dish, and pop it in the oven for 15-20 minutes until golden and bubbling. This method not only saves time on busy weeknights but also ensures you enjoy a comforting, home-cooked meal without the hassle of starting from scratch!
What to Serve with Keto Broccoli and Cauliflower Au Gratin With Sausage
To create a memorable dinner experience, consider these delightful and complementary side dishes that complete your low-carb meal.
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Herb-Infused Quinoa Salad: This light and refreshing salad brings brightness with herbs and lemon, balancing the richness of the au gratin.
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Garlic Roasted Brussels Sprouts: The crispy, caramelized edges of Brussels sprouts add a satisfying crunch that pairs perfectly with the creamy texture of the gratin.
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Zesty Cucumber Tomato Salad: A vibrant combination of cucumber and tomato drizzled with a tangy vinaigrette introduces freshness to the plate, enhancing your savory dish.
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Creamy Spinach Dip: Pairing the richness of this dip with crunchy veggies or low-carb crackers creates a delicious contrast that elevates your dining experience.
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Cauliflower Rice: A light and fluffy alternative that complements the dish’s comforting nature, adding an extra layer of nutrition without carbs.
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Sparkling Lemonade: This refreshing, bubbly beverage perfectly cleanses the palate, making it a delightful companion to your comforting au gratin.
Embrace these pairings to round out your meal, ensuring every bite is a delicious exploration of flavors and textures!
Expert Tips for Keto Broccoli and Cauliflower
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Cheese Consistency: If your cheese sauce seems too thick, gradually add more heavy cream until you reach your desired creaminess. Avoid a lumpy texture by mixing consistently.
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Prepping Vegetables: Steam your broccoli and cauliflower lightly before baking to ensure they are perfectly tender and flavorful. This step prevents them from becoming too mushy in the final dish.
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Sausage Alternatives: For a vegetarian option, simply omit the smoked sausage and load up on additional veggies like bell peppers or mushrooms. This way, your Keto Broccoli and Cauliflower Au Gratin remains hearty and satisfying.
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Layering Flavors: Enhance the cheese sauce by adding spices like paprika or nutmeg, which bring warmth and depth to your comfort dish. Experiment to find your perfect blend!
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Leftover Love: Store any leftover Keto Broccoli and Cauliflower Au Gratin in an airtight container for up to 3 days. Reheat gently in the oven to maintain its creamy texture and flavor.
Keto Broccoli and Cauliflower Variations
Feel free to explore these delightful twists to make this dish your own, infusing your kitchen with even more enticing aromas and flavors!
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Vegetarian: Omit the sausage entirely and add your favorite vegetables like bell peppers and mushrooms for a hearty twist. Trust me, the flavors will still shine bright in this comforting dish.
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Cheese Swap: Try substituting some or all of the cheddar with mozzarella or pepper jack for a different flavor profile. Each cheese brings its unique charm to the velvety sauce, making every bite a delicious mystery.
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Spicy Kick: Add chopped jalapeños or red pepper flakes into the cheese sauce for an extra heat boost. This will elevate the dish to a new level, warming your taste buds with every cheesy scoop.
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Herb Infusion: Mix in fresh herbs like thyme or rosemary before baking for a fragrant touch. The herbs create a beautiful aromatic experience that complements the richness beautifully—your family and friends will be begging for the recipe!
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Texture Twist: Consider adding crispy fried onions on top before baking for a delightful crunch. This textural contrast makes every bite an adventure!
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Nutty Flavor: Stir in a spoonful of nutritional yeast for a cheesy flavor without the dairy, great for those on a plant-based diet. The nuttiness adds a unique flavor dimension to the dish.
Did I mention how delicious this would pair with a side of Gnocchi Spinach Feta? It transforms your meal into a cozy feast everyone will love. Dive into the creative side of cooking and enjoy every comforting bite!

Keto Broccoli and Cauliflower Au Gratin With Sausage Recipe FAQs
What is the best way to select ripe broccoli and cauliflower?
When selecting broccoli and cauliflower, look for florets that are tightly packed and vibrant in color. Avoid any heads with dark spots or yellowing, as these indicate aging. Fresh cauliflower should have a firm, compact head, while broccoli should have crisp, green heads with no signs of wilting.
How should I store leftovers of the Keto Broccoli and Cauliflower Au Gratin?
Store leftovers in an airtight container in the refrigerator for up to 3 days. Make sure to let the dish cool completely before sealing it to maintain freshness. When you’re ready to enjoy it again, I’ll recommend reheating it in the oven, covered with foil to keep it moist, for about 20 minutes at 350°F (175°C).
Can I freeze Keto Broccoli and Cauliflower Au Gratin, and if so, how?
Absolutely! To freeze this dish, first let it cool entirely. Then, portion out servings into freezer-safe containers, sealing them tightly to prevent freezer burn. You can freeze for up to 2 months. When you’re eager for a comforting meal, thaw overnight in the fridge before reheating in the oven at 350°F (175°C) for about 20-25 minutes until warmed through.
What should I do if my cheese sauce is too thick or too thin?
If your cheese sauce appears too thick, gradually add more heavy cream over low heat until you get your desired creaminess. Stir continuously to avoid lumps. Conversely, if the sauce is too thin, let it simmer on low for a few minutes to allow it to thicken. Stir frequently and adjust with a bit more cream cheese if needed for a smoother consistency.
Can this recipe be made vegetarian?
Yes! Simply omit the smoked sausage and boost the dish with additional vegetables such as spinach, bell peppers, or zucchini for added nutrition and flavor. You can still keep it rich and satisfying with the creamy cheese sauce, and the dish will remain a delightful comfort food option for everyone.

Keto Broccoli and Cauliflower: Creamy Comfort Without Guilt
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- In a large skillet over medium heat, add sliced smoked sausage and cook for 5-7 minutes or until browned and crispy. Remove from skillet and set aside.
- Melt 2 tablespoons of butter in the same skillet. Add diced onion and sauté for 3-4 minutes until translucent. Stir in minced garlic and cook for 30 seconds.
- In a medium saucepan, combine softened cream cheese and heavy whipping cream. Whisk over low heat for 3-5 minutes until mixture thickens slightly. Gradually add shredded cheddar cheese, stirring until melted. Season with salt and pepper.
- In a large mixing bowl, combine cooked cauliflower florets, broccoli florets, and crispy sausage. Pour the cheese sauce over and mix thoroughly.
- Transfer mixed ingredients to a baking dish and bake for 15-20 minutes until bubbling and golden brown.

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