Heat a skillet over medium heat. Add ground beef and cook until browned.
Add onion and garlic, sauté until softened.
Stir in tomato paste, Worcestershire sauce, paprika, oregano, salt, and pepper.
Simmer 5–7 minutes, then set aside to cool slightly.
In a microwave-safe bowl, melt mozzarella and cream cheese together (about 1–2 minutes). Stir until smooth.
Add almond flour, baking powder, egg, and salt. Mix into a dough.
If sticky, chill for 10 minutes or dust with almond flour.
Roll out dough between two parchment sheets. Cut into circles (use a round cutter or small bowl).
Place a spoonful of filling in the center of each circle, sprinkle with cheddar if using.
Top with another dough circle, pressing edges with a fork to seal.
Brush tops with beaten egg for shine.
Place pies on a parchment-lined baking sheet.
Bake at 375°F (190°C) for 18–22 minutes, until golden brown.
