• Grease a 9x13 baking pan with nonstick cooking spray.
• Cook sausage and drain of excess grease.
• Spread croutons into the bottom of the pan. Sprinkle sausage on top.
• Add eggs, milk and cream of mushroom soup to a bowl and whisk well.
• Fold in thawed but not drained spinach and sliced mushrooms. Mix egg mixture well.
• Add shredded cheese and mix well.
• Pour cheesy spinach mixture on top of croutons and sausage.
• Cover and refrigerate overnight.
• The next day, bake at 325 for 50-55 minutes.
• Remove from oven.
• Let stand for 5 minutes before slicing and serving (this process is necessary to avoid the casserole breaking apart)
  

Overnight Egg Bake with Spinach & Mushrooms

• Grease a 9x13 baking pan with nonstick cooking spray.
• Cook pork sausage and drain of excess grease.
• Spread croutons into the bottom of the pan. Sprinkle sausage on top.
• Add eggs, milk and cream of mushroom soup to a bowl and whisk well.
• Fold in thawed but not drained spinach and sliced mushrooms. Mix egg mixture well.
• Add shredded cheese and mix well.
• Pour cheesy spinach mixture on top of croutons and sausage.
• Cover with foil and refrigerate overnight.
• The next day, REMOVE FOIL and bake at 325 for 55-60 minutes, a little longer if necessary. When you overnight a casserole, the ingredients get extra cold and often need an extra 5-10 minutes of baking time.
• Remove casserole from oven.
• Let stand for 5 minutes before slicing and serving.