Egg Casserole - Overnight

I like overnight casserole recipes, they come in handy on the holidays or when guests come over!

this is from my friend Robyn Delight

Egg Casserole

1 (12 oz.)  sausage

1/4 to 1/2 cup fresh mushrooms, sliced

1 med chopped onion

6 eggs

3 Tbslp sour cream

1/4 - 1/2 cup salsa

4 oz Velveeta cheese

4 oz Cheddar Cheese

4 oz Mozzarella Cheese

Saute mushrooms, sausage, and onion together, drain.  Blend eggs and sour cream for 1 minute.  Bake the eggs and sour cream mixture in a greased 7 x 11 pan for 8 to 10 min at 400 degrees

Remove from oven; place salsa on top, then place sausage mixture on top and then all the cheeses.  Refrigerate overnight, then cook for 300 degrees for 45 minutes .

Can double this and put in 9 x 13