Preheat oven to 375°F and line a baking sheet with parchment paper.

Brown ground beef with onion in a skillet until cooked through. Drain grease and season with salt and pepper.

Stir in chopped pickles and shredded cheese. Let cool slightly.

Flatten dough rounds, add filling, fold over, and seal edges.

Place pockets on baking sheet, brush with butter if desired, and bake 15–18 minutes until golden.