Sheet Pan Frittata Recipe (2024)

18

eggs

⅓ c

cream

2 tbsp

olive oil

1 tsp

kosher salt

½ tsp

freshly ground black pepper

1 md

onion, sliced into strips

2

leeks, chopped into ½-inch half rings

1

bunch scallions, green and white parts, chopped

2-3 c

precooked vegetables (blanched or steamed asparagus or potatoes; roasted summer squash, cherry tomatoes, carrots, bell peppers, cauliflower, or broccoli; drained and chopped kimchi; wilted, drained, and chopped spinach, kale, Swiss chard, or other greens; shelled peas)

4-6 oz

cheese (goat cheese crumbles, dollops of ricotta, cubed cheddar or feta)

1 tbsp

minced oregano or tarragon or ½ cup of more mild, tender ones like chopped parsley, cilantro, or basil

1. Preheat the oven to 300°F. Prepare your sheet pan by brushing it—especially the sides—thoroughly with olive oil, then line it with parchment paper so that there's overhang on the longest edges. Brush the parchment with olive oil.
2. Cook your alliums: Warm a splash of olive oil in a skillet, then add the alliums with a pinch of salt. At the very least, cook them over medium heat until the raw bite is cooked off. If you wish to caramelize them, cook on medium-low heat, stirring every now and then, until reduced, sticky, browned, and sweet. Timing will vary depending on what type of allium you use, so you must taste as you go! Cool for at least 10 minutes.
3. In a large mixing bowl, whisk together the eggs, cream, olive oil, salt, and pepper. Fold in all the fillings except for ricotta cheese, if using. Scrape the mixture into the prepared sheet pan using a rubber spatula, and gently nudge around the fillings so that they're evenly distributed. Dollop the ricotta over the surface if you're using it.
4. Carefully transfer the pan to the oven and bake for 25 to 30 minutes, rotating once halfway, until the eggs are set and there aren't any puddles of uncooked egg on the surface. If your oven isn't level, rotate the pan every 8 minutes or so, which will help to get you an even frittata.
5. Cool for at least 15 minutes before serving. The best way to slice is to run a sharp knife around the un-parchment-ed edges, then flip the pan over onto a big cutting board or other clean work surface. Peel off the parchment. Don't bother trying to flip it back upright, as it'll most definitely tear in half. Use a chef's knife to cut it into rectangles or squares, turning them upright to serve. This is good warm, at room temperature, or cold. Kept in an airtight container in the refrigerator, the frittata will keep for 3 or 4 days.