Mary'S Onion Casserole - cooking recipe

Ingredients

8 large yellow onions, sliced thin
3 Tbsp. butter
salt and pepper

Preparation

Put a layer of sliced onions in bottom of a casserole serving 4 people.
Sprinkle with salt and pepper.
Add 8 small nobs of butter around each layer of onions.
Repeat until casserole is full.
Cover and bake 1 hour at 350\u00b0 without removing cover.