Chicken and Vegetable Frittata

The smell of this frittata baking reminds me of Sunday mornings when my roommate would roast a chicken the night before, leaving the perfect amount of meat for a next-day breakfast transformation.

I once made this for a book club brunch, and everyone kept asking for the recipe. One friend admitted she usually skips breakfast, but she went back for seconds.

Ingredients

• 1 cup cooked chicken breast: Leftover roasted chicken works beautifully here, adding depth and savory richness
• 6 large eggs: Room temperature eggs whisk up fluffier and incorporate more evenly with the milk
• 1/4 cup milk: Whole milk creates the creamiest texture, though any milk you have will work
• 1 cup baby spinach: The spinach wilts down beautifully, adding color and nutrients without overwhelming the dish
• 1/2 cup bell pepper: Red or yellow brings natural sweetness and vibrant color to every slice
• 1/2 cup zucchini: Dice it small so it cooks through evenly and adds subtle texture
• 1/2 small red onion: Finely chopped, it mellows during cooking and adds just enough bite
• 1 clove garlic: Minced fresh garlic infuses the vegetables with aromatic warmth
• 1/2 cup shredded cheddar or mozzarella: Creates that irresistible cheese pull in every bite
• 2 tbsp grated Parmesan: Adds a salty, nutty finish on top that browns beautifully
• 1/2 tsp salt and 1/4 tsp black pepper: Essential seasoning that brings all the flavors together
• 1/4 tsp dried oregano and thyme: Classic Italian herbs that complement both chicken and vegetables
• 2 tbsp olive oil: For sautéing the vegetables and preventing sticking in the skillet

Instructions

Preheat your oven:

Get it to 375°F so it is ready when you need to slide the skillet in

Warm your skillet:

Heat the olive oil in your 10-inch ovenproof pan over medium heat

Start the aromatics:

Add the red onion and bell pepper, sautéing for 2 minutes until they soften

Add the zucchini:

Cook for another 2 minutes, stirring occasionally so it browns slightly

Bring in the greens:

Stir in the garlic and spinach, cooking just until the spinach wilts completely

Warm the chicken:

Add the diced chicken and cook for 1 minute to heat it through evenly

Whisk the eggs:

In a separate bowl, beat together the eggs, milk, salt, pepper, oregano, and thyme

Combine everything:

Pour the egg mixture evenly over the chicken and vegetables in the skillet

Add the cheese:

Sprinkle the shredded cheese and Parmesan generously across the top

Set the edges:

Cook on the stovetop for 3 to 4 minutes until you see the edges start to firm up

Bake to perfection:

Transfer to the oven and bake for 12 to 15 minutes until the center is set and golden

Let it rest:

Cool for 5 minutes before slicing, which helps the frittata hold its shape beautifully

Save

My neighbor once knocked on my door while this was baking, drawn by the smell wafting through the hallway. She left with a warm slice wrapped in a paper towel.

Make It Your Own

Swap the chicken for leftover turkey or go completely vegetarian with just the vegetables. The technique stays the same regardless of what you toss in.

Serving Suggestions

A crisp green salad on the side cuts through the richness perfectly. I also love serving this with roasted potatoes for a heartier meal.

Storage And Reheating

This frittata keeps beautifully in the refrigerator for up to three days. Reheat individual slices in the microwave for about 30 seconds or enjoy it cold straight from the fridge.

• Wrap cooled slices individually for easy grab and go breakfasts
• The flavors actually develop more after a day in the refrigerator
• Freeze whole portions for up to two months if you want to meal prep ahead

Save

There is something deeply satisfying about turning leftovers into something that feels like a completely new meal. This frittata never fails to make the morning feel special.

Recipe FAQs

→ Can I make this frittata ahead of time?

Yes, frittata tastes wonderful when made ahead. Prepare it up to a day in advance, refrigerate, then serve chilled or gently reheated at 350°F for 10-15 minutes.

→ What vegetables work best in frittata?

Bell peppers, zucchini, spinach, onions, and mushrooms all work beautifully. Just be sure to sauté watery vegetables like zucchini and spinach before adding eggs to prevent sogginess.

→ Can I use leftover rotisserie chicken?

Absolutely! Leftover rotisserie chicken is perfect for this dish. Simply dice it and add when the recipe calls for cooked chicken—it will warm through during the stovetop cooking.

→ How do I know when the frittata is done?

The frittata is ready when the center is set (no longer jiggly) and the top is lightly golden. A knife inserted in the center should come out clean. It will continue cooking slightly as it rests.

→ Can I make this dairy-free?

Yes, use dairy-free cheese alternatives or omit the cheese entirely. For the milk, substitute with unsweetened almond milk, coconut milk, or simply use water in the egg mixture.

→ What size skillet should I use?

A 10-inch ovenproof skillet is ideal. Larger skillets will result in a thinner frittata that cooks faster, while smaller ones create thicker portions that may need extra baking time.