Meatloaf Grilled Cheese Sandwich - cooking recipe

Ingredients

1 slice leftover meatloaf
1 tablespoon margarine
2 slices bread
1 teaspoon ketchup, or to taste
3 slices Cheddar cheese
1/2 teaspoon prepared yellow mustard, or to taste (optional)

Preparation

Place meatloaf on a microwave-safe plate; cook in the microwave on High, 30 seconds at a time, until heated through.
Melt margarine in a non-stick skillet over medium heat. Place both bread slices in skillet over melted margarine. Build sandwich on bread slice in this order: ketchup, 1 slice Cheddar cheese, warm meatloaf slice, and mustard. Flip second slice of bread over onto sandwich; cook until bottom of sandwich is lightly browned, about 2 minutes.
Flip sandwich with a spatula and place 1 slice Cheddar cheese on top; continue cooking until cheese melts slightly, about 1 minute. Flip sandwich over and lay remaining slice of cheese on top; cook until cheese on the bottom of sandwich is melted and crisp, about 2 minutes. Turn sandwich over; cook until cheese is melted and crisp, about 2 minutes.