Mimi's Squash Casserole

Ingredients:
6 medium yellow squash, chopped
1 med. onion, chopped
1 c. grated cheese
2 eggs
1/2 c. milk
1/4 c. melted butter
1 sleeve Ritz crackers, crushed
Salt and pepper to taste

Instructions: 
Cook onion and squash until tender and drain. (I use my steamer, actually.) Add milk and beaten egg to squash and onion mixture. Mix cheese, butter, and half of the crushed Ritz crackers together, then add to squash mixture.  Add salt and pepper. Pour into buttered 9 x 13 casserole dish. Sprinkle other half of crushed Ritz crackers on top. Bake at 400 degrees for 20 to 30 minutes.