Whisk together soy sauce, brown sugar, sesame oil, minced garlic, and ginger in a bowl to create a flavorful marinade. Place your tender cut of steak into a resealable bag or dish, ensuring it's well coated in the marinade. Let it sit in the refrigerator for 15-30 minutes.

While the steak marinates, prepare your rice according to package instructions for fluffy jasmine or white rice, typically simmering for about 15-20 minutes.

Heat a grill pan or skillet over medium-high heat. Remove the steak from the marinade and cook for 4-5 minutes on each side for medium-rare. Let the steak rest for a few minutes before slicing it thinly against the grain.

In a mixing bowl, combine mayonnaise, Sriracha, and lime juice until smooth and creamy. Adjust Sriracha to your preferred spice level.

Assemble the bowls by placing a generous scoop of fluffy rice in each bowl. Top with sliced steak and drizzle with spicy cream sauce. Sprinkle with chopped green onions.

Serve immediately while warm, and enjoy each bite of the tender steak, fluffy rice, and zesty cream sauce.