Upside-Down Pizza

Directions

Remove sausage casings and crumble into a 10 to 12 inch frying pan over medium heat.

Add onion and cook, stirring frequently, until sausage is well browned, abouit 10 minutes.

Discard fat, and add sauce and mushrooms.

Heat until bubbly, then pour into an ungreased 9×13 inch baking dish .

Spread mozzarella even over the top.

In blender whirl eggs, milk, oil, flour and salt until smooth.

Pour enenly over casserole, sprinkle with parmesan cheese.

Bake uncovered in a 400℉ (200℃) degree oven until crust is puffed and golden brown, about 25 minutes.

You might wait until after baking to sprinkle cheese as crust puffs better that way.