Start by heating a skillet over medium heat and cooking the ground beef until browned. Break it into small pieces as it cooks so the filling is even. Drain any excess grease, then mix in taco seasoning and salsa. Let it simmer for a few minutes so the flavors blend well.
Preheat your oven and lightly grease a muffin tin with cooking spray. Take the biscuit dough and flatten each piece into a small circle. Press each circle gently into the muffin tin, forming a cup shape that will hold the filling securely.
Spoon the prepared taco mixture evenly into each dough cup. Fill them just enough without overflowing. Sprinkle shredded cheese generously on top so it melts and forms a delicious cheesy layer during baking.
Place the muffin tin in the preheated oven and bake until the dough turns golden brown and the cheese is melted. This usually takes around 15–18 minutes. Keep an eye on them to avoid over-browning.
Once baked, let the taco bites cool slightly before removing them from the pan. Top each bite with sour cream, diced tomatoes, and green onions. Serve warm for the best taste and texture.