One-Pan Cheesy Breakfast Frittata-Sandwich

Ingredients:

• 6 large eggs

• 1/2 cup milk (or heavy cream for a richer taste)

• 1 cup shredded cheese (cheddar, mozzarella, or a mix)

• 1 small onion, finely chopped

• 1 small bell pepper, chopped (optional)

• 1/2 cup cooked bacon, crumbled (or sausage, ham, or vegetables of choice)

• 1 tablespoon olive oil or butter

• Salt and pepper, to taste

• 4 slices of bread (for the sandwich)

• 2 tablespoons butter (for grilling the sandwich)

Instructions: 

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