This is a great make-ahead dish and you can also substitute just about any ingredient! Just tailor the seasonings in the egg mixture to suit the ingredients you are using. You can also prepare this the night before and leave overnight.
Ingredients
- cooking spray:
- slices whole wheat bread: 6 piece (to taste)
- butter: 1 Tbsp (or as needed)
- slices deli ham: 12 piece (to taste)
- slices Swiss cheese: 6 piece (to taste)
- milk: 0.5 cup
- eggs: 4 piece
- Worcestershire sauce: 1 tsp
- mustard powder: 0.5 tsp
- salt and ground black pepper: (to taste)
Metric Conversion
Stages of cooking
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Preheat oven to 350 degrees F (175 degrees C). Spray the inside of a 9x13-inch casserole dish with cooking spray.
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Spread butter on one side of each bread slice; top each bread slice with 2 slices ham and 1 slice Swiss cheese. Arrange open-faced sandwiches in the prepared casserole dish, overlapping them to fit.
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Whisk milk, eggs, Worcestershire sauce, mustard powder, salt, and pepper together in a bowl; pour milk mixture over the open-faced sandwiches. Allow milk mixture to soak in for at least 15 minutes.
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Bake in the preheated oven until eggs are set and casserole is cooked through, about 20 minutes.
