Preheat the oven to 400°F (200°C).

In a mixing bowl, combine flour, baking powder, and salt.

Cut in the cold butter until the mixture resembles coarse crumbs.

Stir in the milk until just combined. Do not overmix.

In a separate bowl, mix the cooked sausage, softened cream cheese, cheddar cheese, garlic powder, and black pepper until well combined.

On a floured surface, roll out the biscuit dough to about 1/4 inch thick.

Cut the dough into squares (about 3x3 inches).

Place a spoonful of the sausage filling in the center of each square.

Fold the corners of the dough over the filling to form a pocket and pinch to seal.

Place the filled bites on a baking sheet lined with parchment paper.

Bake in the preheated oven for 15-20 minutes or until golden brown.

Remove from the oven and let cool slightly before serving.