Start your day right with this Baked Onion-Walnut Frittata recipe. Made with Onions, onions, olive oil and thyme. Easy step-by-step instructions included.
This Baked Onion-Walnut Frittata relies on simple, everyday ingredients such as melted onions, olive oil, fresh thyme leaves and garlic clove, minced. It comes together quickly and makes 4 servings, at about 529 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's an easy way to start the day, whether you're cooking a relaxed weekend breakfast or need something satisfying before a busy morning. Pair it with fresh fruit or your favorite hot drink to round out the meal.
Updated Jun 30, 2026