In a mixing bowl, combine self-raising flour and sweetened Greek yogurt until a soft, dough-like consistency forms. Knead gently on a floured surface for about 1-2 minutes until the dough is smooth and elastic, being careful not to over-knead.

Divide your soft dough into two equal portions, then roll each portion into a log that’s about 1-inch thick. Cut each log into small pieces, weighing around 8-12g each, and roll them into little balls.

Set your air fryer to 350°F (180°C) and allow it to preheat for about 5 minutes. While the air fryer heats up, lightly oil the basket to prevent any sticking.

Once preheated, dip each doughnut ball into melted butter, ensuring they are well-coated, and place them in the air fryer basket. Air fry for 5 minutes, or until they puff up and turn golden brown.

While your Air Fryer Donut Bites are still warm, roll each one in melted butter again, followed by coating them in a mixture of granulated sugar and ground cinnamon.

For an extra touch of indulgence, drizzle your warm donut bites with melted chocolate if desired. Serve them warm as a delightful snack or dessert.