1 1/2 Biscuit Mix
1 Cheddar Cheese
Cook chopped onion in half of the butter.
Stir together milk and egg.
Add biscuit mix, onion mixture, and 1/2 the cheese.
Spread batter in greased 8-inch round pan.
Sprinkle with remaining cheese.
Melt remaining butter, drizzle over mixture.
Bake at 400°F degrees about 20 minutes or until toothpick inserted near the center comes out clean.