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 Potato & Red Onion Frittata?

You need 10 ingredients. The key ingredients include: 1 large red onion, chopped, 1/2 teaspoon minced fresh rosemary or 1/8 teaspoon dried rosemary, crushed, 4 tablespoons butter, divided, 1 garlic clove, minced, and more.

Is Potato & Red Onion Frittata suitable as breakfast?

Yes, Potato & Red Onion Frittata falls under the Breakfast category and is a great choice for this type of meal.

How do I store leftover Potato & Red Onion Frittata?

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

Potato & Red Onion Frittata Recipe

Name: Potato & Red Onion Frittata
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 large red onion, chopped; 1/2 teaspoon minced fresh rosemary or 1/8 teaspoon dried rosemary, crushed; 4 tablespoons butter, divided; 1 garlic clove, minced; 1/2 pound red potatoes (about 5 small), thinly sliced; 6 eggs, lightly beaten; 1/3 cup 2% milk; 1/2 teaspoon salt; 1/4 teaspoon pepper; 1/2 cup shredded Gruyere or Swiss cheese

Start your day right with this Potato & Red Onion Frittata recipe. Made with red onion, fresh rosemary, butter and garlic. Easy step-by-step instruction…

This Potato & Red Onion Frittata relies on simple, everyday ingredients such as large red onion, chopped, butter, divided, garlic clove, minced and eggs, lightly beaten. It comes together quickly and makes 4 servings, at about 476 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.

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

My Personal Notes

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Potato & Red Onion Frittata

Tips for the best results

Variations & substitutions

My Personal Notes

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