How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Caramelized Mushroom And Onion Frittata?

You need 12 ingredients. The key ingredients include: 1 pound sliced fresh mushrooms, 1 medium red onion, chopped, 3 tablespoons butter, 3 tablespoons olive oil, and more.

Is Caramelized Mushroom And Onion Frittata suitable as breakfast?

Yes, Caramelized Mushroom And Onion Frittata falls under the Breakfast category and is a great choice for this type of meal.

How do I store leftover Caramelized Mushroom And Onion Frittata?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Caramelized Mushroom And Onion Frittata Recipe

Name: Caramelized Mushroom And Onion Frittata
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 pound sliced fresh mushrooms; 1 medium red onion, chopped; 3 tablespoons butter; 3 tablespoons olive oil; 1 shallot, chopped; 1 garlic clove, minced; 1/2 cup shredded cheddar cheese; 1/4 cup shredded Parmesan cheese; 8 large eggs; 3 tablespoons heavy whipping cream; 1/4 teaspoon salt; 1/4 teaspoon pepper

Start your day right with this Caramelized Mushroom And Onion Frittata recipe. Made with mushrooms, red onion, butter and olive oil. Easy step-by-step i…

This Caramelized Mushroom And Onion Frittata relies on simple, everyday ingredients such as sliced fresh mushrooms, medium red onion, chopped, butter and olive oil. It comes together quickly and makes 4 servings, at about 654 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

Serves 4 Breakfast

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Caramelized Mushroom And Onion Frittata

Tips for the best results

Variations & substitutions

My Personal Notes

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