Cheddar Cheese Casserole - cooking recipe

Ingredients

1 c. mayonnaise (Hellmann's)
1 c. onion, thinly sliced
1 c. sharp Cheddar cheese, grated

Preparation

Bake at 350\u00b0 for 25 to 30 minutes, uncovered.
Stir a few times while cooking.
Serve with small pumpernickel bread.