Preheat oven to 375°F. Line a rimmed sheet pan with parchment.
Heat oil in a skillet over medium. Cook onion until softened, 3 to 4 minutes.
Add beef. Cook, breaking it up, until browned. Drain excess fat.
Stir in garlic. Cook 30 seconds. Add sauces, salt, pepper, and flakes. Simmer 1 minute. Cool slightly.
Mix melted butter, Parmesan, garlic powder, and half the parsley in a small bowl.
Press each biscuit into a 4 to 5 inch round on the pan.
Spoon beef onto centers. Top with cheddar. Pull dough over and pinch to seal.
Set seam-side down. Brush tops lightly with the butter mixture.
Bake until deep golden, 12 to 16 minutes.
Brush with remaining butter. Sprinkle parsley. Rest 5 minutes before serving.