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Roasted Red Pepper Frittata

This roasted red pepper frittata is a beautifully textured vegetarian main that celebrates simple, high-quality ingredients. By gently simmering the potatoes and onions in olive oil before baking, the vegetables achieve a melt-in-the-mouth consistency that contrasts perfectly with the sweet, charred notes of the oven-roasted peppers. This traditional approach ensures every wedge is packed with savoury depth and a rich, golden finish that looks wonderful when served at the centre of the table.

A versatile addition to your recipe repertoire, this dish works equally well as a light weekend lunch or a nutritious midweek supper. It is best enjoyed warm or at room temperature, perhaps served alongside a crisp green salad or some toasted sourdough. Because the peppers can be roasted up to two days in advance, it is also a practical choice for those who enjoy effortless, homemade entertaining without the last-minute stress.

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Ingredients for Roasted Red Pepper Frittata

  • 2 medium red peppers

  • 300ml extra-virgin olive oil, plus more for drizzling

  • Kosher salt

  • 1 large onion, thinly sliced

  • 675g German Butterball potatoes (about 6), peeled, sliced 1/4" thick

  • 8 large eggs

Preheat oven to 204°C. Place peppers on a rimmed baking sheet, drizzle with oil, and turn to coat. Season with salt. Roast peppers, turning every 5 minutes, until softened and skins look wrinkly and lightly blistered, 20–25 minutes. Let cool slightly. Peel and remove seeds from peppers, then cut flesh into 1/2"-thick slices. (You should have about 160g .)

Meanwhile, toss together onion and potatoes in an 8" cast-iron skillet; season with salt. Cover with 300ml oil and set over medium heat. Bring to a gentle simmer, about 3 minutes, and cook, stirring occasionally with a wooden spoon and scraping the bottom of the pan to minimize sticking, reducing heat if needed, until there is no crunch left to the onion (do not let it take on any colour) and the potatoes are tender, 25–30 minutes. Taste a piece of potato and onion to check. Some of the mixture may stick to the pan, and some of the potatoes may break into smaller pieces toward the end of cooking—both of these things are okay. Transfer to a medium bowl; let cool until warm, 8–10 minutes. Stir in roasted peppers.

Clean skillet and place in oven to heat. Whisk eggs in a medium bowl until no streaks remain; season with salt. Using a slotted spoon or tongs, lift vegetables out of the oil and add to eggs (this is best done while they are still warm). Set onion-potato oil aside.

Transfer skillet to stovetop and continue to heat over high until ripping hot, about 5 minutes. Add 3 tablespoons reserved onion-potato oil to pan, then pour in egg mixture. Cook, using a heatproof rubber spatula or wooden spoon to pull egg mixture from the outer edges into the centre, allowing uncooked egg to flow underneath and dragging the hotter, more-set egg from the edges into the centre. This will help frittata cook evenly. Transfer skillet back to the oven and bake the frittata until browned and set, 10–14 minutes. Let frittata cool in pan 5–10 minutes, then invert onto a platter and cut into wedges to serve.

Do Ahead: Peppers can be roasted 2 days ahead; cover and chill. Remove from refrigerator when you start prepping other ingredients so that they’re not fridge-cold when you combine them with the eggs.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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