"Covering the onion and zucchini for a few minutes while they cook helps them steam evenly; once the pan is uncovered, let the liquid evaporate so the frittata will be firm...."
INGREDIENTS
•
1 tablespoon olive oil
•
1 small onion, finely diced
•
3 medium zucchini, (1 1/2 pounds), cut into 1/4-inch-thick rounds
•
1 tablespoon fresh thyme leaves (or 1 teaspoon dried)
•
Coarse salt and freshly ground pepper
•
8 large eggs
•
1/4 cup milk
•
3/4 cup shredded shredded white cheddar
•
3 medium (1 pound) vine ripe tomatoes, cored and thinly sliced crosswise