Preheat oven to 350°F and spray a quiche dish or 9" glass pie plate with non-stick cooking spray.

Slice zucchini into thin rounds.

Cook sweet potatoes and cube them.

Layer zucchini slices in the dish.

Add a layer of cooked sweet potato cubes.

Add another layer of zucchini slices.

Season the vegetables with salt and pepper.

In a mixing bowl, whisk together eggs, milk, minced onion, minced garlic, salt, and pepper.

Pour the egg mixture over the vegetables in the dish.

Bake in the preheated oven for 35-40 minutes, or until the eggs are cooked through.

Serve warm with fresh fruit and a glass of milk.