One-Pan Ham Swiss Frittata

Featured in: Simple One-Pan Lemon Meals

This one-pan dish blends savory ham, nutty Swiss cheese, and tender veggies for a satisfying frittata. Whisk eggs and milk, pour over sautéed onions, spinach, and tomatoes, then bake until puffed and golden. Serve warm or at room temperature; ideal for brunch, meal prep, or an easy weeknight dinner. Customize with Gruyère or cheddar, add extra vegetables, and pair with salad or bread. The process is simple—preheat, sauté, mix, bake—delivering a protein-packed, gluten-free meal that keeps well in the fridge.

Updated on Sat, 28 Mar 2026 00:47:07 GMT
Savory One-Pan Ham and Swiss Frittata with fluffy eggs, diced ham, and melted Swiss cheese, perfect for a hearty brunch. Save to Pinterest
Savory One-Pan Ham and Swiss Frittata with fluffy eggs, diced ham, and melted Swiss cheese, perfect for a hearty brunch. | citrusfern.com

The sizzle of onions in hot olive oil always signals something comforting is about to happen, and making this One-Pan Ham and Swiss Frittata brings that moment every time. One rainy evening, I whipped this up after a long workday—the aroma of ham browning in the skillet was oddly relaxing, and the bright colors from spinach and tomatoes made the kitchen feel cheerful. Funny enough, the first time I tried it, I forgot to preheat the oven but the stovetop stint made the edges delightfully crispy. There's something undeniably satisfying about a meal that goes from stovetop to oven in one pan, especially when hungry family members are circling nearby. The creamy, melty layer of Swiss cheese on top always draws a grin from my partner, who insists this dish is brunch royalty.

I remember serving this frittata for a casual Sunday brunch with friends: we ended up eating it straight from the pan, forks clinking, debating which veggie mix-in tasted best. There was laughter when someone realized the last slice had twice the amount of cheese as the others—no complaints, just contentment around the table. It's been the hero in more than one meal-prep round, saving me on frantic weekday mornings. This dish quietly rallies everyone with its warm, inviting flavors and the promise of a stress-free cleanup. There was even a day when the spinach wilted perfectly, transforming the whole frittata into a little celebration.

Ingredients

  • Eggs: Use fresh, large eggs—the richer yellow yolks give better color and fluff.
  • Whole milk: This creates a creamier texture; skim will make it firmer but less luscious.
  • Swiss cheese: Shredded Swiss melts smoothly and adds a nutty flavor, but Gruyère works if you’re feeling fancy.
  • Diced cooked ham: Leftover spiral ham is ideal; dry-cured ham can add punchy saltiness.
  • Yellow onion: Dice finely so it cooks quickly and mellows in flavor.
  • Baby spinach: Chop to avoid stringy bites and stir in just before eggs to keep vibrant green.
  • Cherry tomatoes: Halve for juiciness and a pop of color; don’t skip for breakfast-worthy appeal.
  • Salt, black pepper, dried thyme: Seasoning is key—don’t under salt, and thyme brings a subtle earthiness.
  • Olive oil: Use it to coat the pan; don’t skimp, as it prevents sticking and adds flavor.

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Instructions

Start the Oven:
Preheat your oven to 375°F so it’s ready to finish the frittata—no need to wait while eggs sit.
Sauté Aromatics:
Heat olive oil in a sturdy oven-safe skillet; tumble in the diced onions, listen for the soft sizzle, and stir until translucent.
Add Ham and Veggies:
Drop in diced ham, cook until it warms through and browns slightly; toss in spinach and cherry tomatoes and stir until spinach just wilts and tomatoes soften.
Mix Eggs and Cheese:
Whisk eggs, milk, salt, pepper, and thyme enthusiastically—aim for a smooth blend without streaks—then fold in half the cheese.
Assemble in Pan:
Pour egg mixture gently over ham and veggies, tilting pan if needed; sprinkle remaining cheese evenly for golden bites.
Set Edges:
Cook on the stovetop for a couple of minutes while watching edges firm up—poke gently to check.
Bake to Finish:
Slide skillet into oven, bake until the frittata puffs and the center feels stable when you nudge it.
Cool and Serve:
Give it a few moments to settle out of the oven; slice and serve warm or at room temperature, letting the flavors mingle.
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| citrusfern.com

The day this frittata became more than just food was a brisk autumn morning; eating the leftovers cold out of the fridge, I realized how well it holds up—each bite still vibrant, cheese still rich. Sometimes, cooking brings unexpected comfort, a sense that one simple pan can deliver a little joy again and again.

Making It Your Own

Experimenting in the kitchen means every frittata is slightly different—sometimes the tomatoes burst, sometimes the ham crisps, and sometimes an extra herb sneaks in. When you swap Swiss for cheddar or add mushrooms, flavors shift and new favorites emerge quickly. If you’re prepping ahead, slice before storing for easy grab-and-go breakfast. Incorporating leftover veggies from last night’s dinner is a trick I learned after a busy week. Whether you’re using bell peppers or even broccoli, creativity keeps this recipe feeling fresh.

Tools and Tactics for Success

A trusted oven-safe skillet makes or breaks a frittata—nonstick pans minimize sticking, but cast iron delivers better browning. Invest in a good whisk for well-blended eggs; skipping this step gives uneven bites. Use a sharp knife for neat veggie cuts, and a spatula for sliding slices from the pan. Timing matters: don’t forget to preheat the oven. Even simple meals feel special if you have your favorite tools on hand.

Quick Ways to Elevate Your Frittata

Sometimes, topping the frittata with fresh herbs just before serving lifts the flavors and adds color. A sprinkle of flaky salt or a dollop of sour cream gives a breakfast-for-dinner vibe. If you serve it alongside a crisp salad or rustic bread, the meal feels complete and nourishing.

  • If using leftover ham, add before veggies for a crispier finish.
  • Letting the frittata cool briefly makes slicing tidier.
  • Try mixing in a touch of smoked paprika for unexpected warmth.
Golden One-Pan Ham and Swiss Frittata loaded with tender vegetables, savory ham, and bubbly Swiss cheese, baked to perfection. Save to Pinterest
Golden One-Pan Ham and Swiss Frittata loaded with tender vegetables, savory ham, and bubbly Swiss cheese, baked to perfection. | citrusfern.com

This frittata makes ordinary mornings feel a little brighter or turns dinner into a one-pan victory. Hope it brings ease and flavor to your kitchen soon!

Recipe FAQs

Can I substitute Swiss cheese with another type?

Yes, Gruyère or cheddar are great alternatives to Swiss cheese, offering similar melt and flavor.

What vegetables can I use besides spinach and tomatoes?

Try bell peppers, mushrooms, zucchini, or broccoli for extra color and texture.

Is this dish suitable for meal prep?

Absolutely. It stays fresh refrigerated for up to four days and reheats easily.

What skillet size works best?

A 10–12 inch oven-safe skillet ensures even cooking and easy transfer to the oven.

How do I serve the frittata?

Enjoy warm or at room temperature. It pairs well with salad or crusty bread for a complete meal.

Is this dish gluten-free?

Yes, the main ingredients are naturally gluten-free. Check ham and cheese labels for certainty.

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One-Pan Ham Swiss Frittata

Blend eggs, ham, Swiss, and veggies in one pan for a hearty, easy meal with minimal cleanup.

Prep Time
10 minutes
Time to Cook
25 minutes
Overall Time
35 minutes
Recipe by Citrus Fern Wyatt Palmer

Recipe Category Simple One-Pan Lemon Meals

Skill Level Easy

Cuisine European

Makes 4 Portions

Diet Preferences No Gluten, Low Carb

What You Need

Eggs & Dairy

01 8 large eggs
02 1/4 cup whole milk
03 1 cup shredded Swiss cheese

Meats

01 1 cup diced cooked ham

Vegetables

01 1/2 cup diced yellow onion
02 1 cup chopped baby spinach
03 1/2 cup cherry tomatoes, halved

Spices & Seasonings

01 1/2 teaspoon salt
02 1/4 teaspoon black pepper
03 1/4 teaspoon dried thyme

For Cooking

01 1 tablespoon olive oil

Steps

Step 01

Prepare Oven: Preheat oven to 375°F.

Step 02

Sauté Vegetables: Heat olive oil in a large oven-safe skillet over medium heat. Add diced onion and sauté for 3 minutes until translucent.

Step 03

Cook Ham and Spinach: Add diced ham and cook for 2 minutes. Stir in chopped spinach and cherry tomatoes; cook until spinach is wilted, about 1 minute.

Step 04

Mix Eggs and Cheese: In a mixing bowl, whisk together eggs, whole milk, salt, black pepper, and dried thyme. Stir in half of the shredded Swiss cheese.

Step 05

Combine and Layer: Pour the egg mixture evenly over ham and vegetables in the skillet. Sprinkle the remaining Swiss cheese on top.

Step 06

Start Cooking: Cook on the stovetop for 2–3 minutes until edges begin to set.

Step 07

Bake in Oven: Transfer skillet to the preheated oven and bake for 12–15 minutes, until frittata is puffed and fully set in the center.

Step 08

Cool and Serve: Remove skillet from oven and let cool for several minutes. Slice and serve warm or at room temperature.

Tools Needed

  • Oven-safe skillet, 10–12 inch
  • Mixing bowl
  • Whisk
  • Knife and cutting board
  • Spatula

Allergy Details

Always review every ingredient for possible allergens. If unsure, chat with your healthcare provider first.
  • Contains eggs and milk/dairy.
  • Includes pork if using ham. Check labels for gluten or other allergens as appropriate.

Nutrition Info (per serving)

Details provided to help guide you. For health decisions, speak with a professional.
  • Energy (kcal): 320
  • Fat Content: 21 grams
  • Carbohydrate: 5 grams
  • Proteins: 26 grams

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