Bacon-Asparagus Strata

Nonstick cooking spray

strips bacon, crisp-cooked, drained, and chopped

9 - ounce package frozen cut asparagus, thawed and well-drained

bottled roasted red sweet peppers, drained and chopped

slices dry white bread, cut into 1/2-inch cubes (about 8 cups)

shredded Swiss cheese (12 ounces)

eggs

milk

dry mustard or 3 tablespoons Dijon-style mustard

salt

cayenne pepper