Cheesy Mushroom Bake - cooking recipe

Ingredients

3 tablespoons butter
1/2 cup chopped celery
1/4 cup chopped onion
1/2 lb sliced mushrooms (may add more if desired)
4 cups day old whole wheat bread, cubed
8 ounces shredded cheddar cheese (mild)
2 eggs
2 cups milk
2 teaspoons dry mustard
salt and pepper, to your taste

Preparation

In large skillet, melt butter.
Stir in celery, onion and mushrooms.
Saute over low heat, stirring occasionally, until onions become translucent and mushrooms give up their liquid, about 10 minutes.
In bottom of 2 quart buttered casserole, spread half of bread cubes.
Top with half of mushroom mixture.
Sprinkle with half of cheese.
Repeat with remaining bread, mushrooms and cheese.
In bowl, beat together eggs, milk, mustard, salt and pepper, Pour over layers in casserole.
Refrigerate at least 3 hours or overnight before baking.
Bake at 325 degrees, about 50 minutes, until custard is firm.
Let stand 5 minutes before serving.