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Export 8 ingredients for grocery delivery
Step 1
Lightly spray a 9x13x2-inch dish with cooking spray.
Step 2
In a skillet over medium-high heat, cook sausage until no longer pink. Drain fat.
Step 3
Arrange croutons in a single layer in baking dish. Top with sausage and shredded cheese.
Step 4
Whisk together eggs, milk, heavy cream, dry mustard, onion, salt, and pepper. Pour over sausage mixture.
Step 5
Cover and refrigerate 1 hour to overnight.
Step 6
Preheat oven to 350ºF. Bake casserole 45 to 60 minutes, until center is set.
Step 7
Garnish with dried parsley, if desired.