Bake these bite-sized frittatas in a miniature muffin pan. They taste great hot or at room temperature, so you can make them in advance.
RECIPE INGREDIENTS

Cooking spray
1/2 cup onion, finely chopped
2/3 cup reduced-fat ham (about 2 ounces), chopped
1/3 cup (about 1 1/2 ounces) shredded reduced-fat extra-sharp cheddar cheese
2 tablespoons fresh chives, chopped
1/8 teaspoon dried thyme
1/8 teaspoon black pepper
4 large egg whites
1 large egg

RECIPE METHOD

Preheat oven to 350 degrees F.

Heat a large nonstick skillet coated with cooking spray over medium-high heat. Add onion; sauté 2 minutes or until crisp-tender. Add ham; sauté 3 minutes. Remove from heat; cool 5 minutes. Combine remaining ingredients in a large bowl; stir with a whisk. Add ham mixture, stirring with a whisk. Spoon mixture into 24 miniature muffin cups coated with cooking spray. Bake at 350 degrees F for 20 minutes or until set.