Skip to content
  1. Free 7-Day Starter Pack — practical tools for living better with diabetes.Get it free
  2. New recipes, guides and tools every week.Join The Diabetes Vibe Weekly

 admin@thediabetesvibe.com

Close (esc)

Free 7-Day Starter Pack

Printable planner pages, a meal-planning worksheet, grocery checklist and appointment prep sheet — free when you join The Diabetes Vibe Weekly. Unsubscribe anytime. See our Privacy Policy.

See what's inside
Recipes

Spinach, Mushroom and Feta Frittata

Eggs, sautéed mushrooms, spinach, and a little tangy feta bake into a vegetable-packed frittata you can slice into wedges for several easy breakfasts.

3 min read

Published

Key takeaways

  • Cook the mushrooms and spinach until dry so the frittata doesn't turn soggy.
  • Egg dishes are considered safely cooked at 160°F in the center.
  • Pair a wedge with a fiber-rich carb like whole-grain toast or fruit, portioned to fit your plan.
  • Feta is salty, so this recipe uses only a pinch of added salt.
  • Bake once and enjoy wedges for up to 4 days.

Jump to recipe ↓

Busy mornings can make breakfast feel like one more thing to figure out, especially when you're trying to eat in a way that supports your health. This spinach, mushroom and feta frittata takes some of that pressure off. You bake it once, slice it into wedges, and you have a warm, savory breakfast ready for several days.

The frittata is full of vegetables, held together with eggs, and finished with a little tangy feta. It's simple enough for beginner cooks and flexible enough to use whatever vegetables are waiting in your fridge.

Why this frittata makes a balanced breakfast

Many people with diabetes use the Diabetes Plate Method from the American Diabetes Association as a simple guide. About half the plate is non-starchy vegetables, about a quarter is protein, and about a quarter is carbohydrate foods, ideally fiber-rich ones. This frittata covers the first two parts in one dish: spinach, mushrooms, and onion bring the vegetables, while eggs and feta bring the protein.

To round out your plate, add a fiber-rich carbohydrate on the side, such as a slice of whole-grain toast, a small whole-wheat tortilla, or a piece of fresh fruit. How much carbohydrate fits your morning is individual, so work out the right portion with your healthcare team or a registered dietitian. If you count carbohydrates for insulin dosing, including with type 1 diabetes, the side you choose will be the main carbohydrate on the plate.

Nutrition guidance for adults with diabetes encourages eating patterns built around vegetables, protein foods, and minimally processed foods, with less added sugar. A vegetable-filled egg dish is an easy way to start the day in that direction. For more morning inspiration, browse our high-protein breakfast ideas.

Tips for an evenly cooked frittata

  • Cook the vegetables first. Mushrooms and spinach release a lot of water. Cooking them until most of the liquid evaporates keeps the frittata from turning soggy.
  • Use an oven-safe skillet. A 10-inch cast-iron or oven-safe nonstick skillet lets you start on the stove and finish in the oven.
  • Whisk gently. Beat the eggs just until the yolks and whites are combined.
  • Bake at a moderate temperature. A 375°F oven sets the eggs evenly without making them rubbery. The frittata is done when the center no longer jiggles and a knife comes out clean. Egg dishes should reach 160°F in the center on an instant-read thermometer.
  • Let it rest. Five minutes of resting makes it much easier to cut clean wedges.

Keeping the sodium moderate

Feta adds a lot of flavor, but it is a salty cheese. This recipe uses a modest amount and only a small pinch of added salt. The Dietary Guidelines for Americans encourage most people to limit sodium, so taste before adding more and let garlic, black pepper, and fresh herbs do some of the work.

Sodium can vary quite a bit between cheese brands. The Nutrition Facts label makes it easy to compare, and our guide on how to read a nutrition label walks you through it step by step.

Meal-prep and serving ideas

A frittata is one of the easiest breakfasts to make ahead. Bake it on the weekend, let it cool, cut it into six wedges, and store them in containers for quick weekday mornings. Reheat a wedge in the microwave until hot, or enjoy it at room temperature after a short rest on the counter.

  • Classic breakfast: Serve a wedge with whole-grain toast and sliced tomatoes.
  • Light lunch: Pair a wedge with a big green salad and a handful of berries.
  • On the go: Tuck a wedge into a small whole-wheat pita with a handful of greens.
  • Brunch for a crowd: Double the recipe in a 9x13-inch baking dish and add a few extra minutes to the bake time.

Looking for another make-ahead breakfast with beans and a little more fiber? Try our black bean and veggie breakfast tacos.

Spinach, Mushroom and Feta Frittata

  • Prep15 min
  • Cook30 min
  • Total45 min
  • Servings6

Ingredients

  • 1 tablespoon extra-virgin olive oil
  • 1 small yellow onion, finely chopped (about 1 cup)
  • 8 oz cremini or white mushrooms, sliced (about 3 cups)
  • 2 garlic cloves, minced
  • 5 oz baby spinach (about 5 loosely packed cups), roughly chopped
  • 10 large eggs
  • 1/3 cup milk or unsweetened plain soy milk
  • 1/2 teaspoon dried oregano, or 1 teaspoon chopped fresh thyme
  • 1/4 teaspoon black pepper
  • 1/8 teaspoon salt
  • 1/2 cup crumbled feta cheese (about 2 oz)
  • Optional: 1/2 cup cherry tomatoes, halved
  • 2 tablespoons chopped fresh parsley or dill, for serving
  • Optional, to serve: whole-grain toast or fresh fruit

Instructions

  1. Heat the oven to 375°F with a rack in the center.
  2. Heat the olive oil in a 10-inch oven-safe skillet over medium heat. Add the onion and cook, stirring often, for 4–5 minutes, until softened.
  3. Add the mushrooms and cook, stirring occasionally, for 6–8 minutes, until they release their liquid and most of it has evaporated. Stir in the garlic and cook for 30 seconds.
  4. Add the spinach a handful at a time, stirring until wilted, about 2 minutes. Cook until any liquid in the pan has evaporated, then spread the vegetables in an even layer.
  5. In a large bowl, whisk the eggs, milk, oregano, pepper, and salt just until the yolks and whites are combined.
  6. Pour the egg mixture evenly over the vegetables. Sprinkle the feta and tomatoes (if using) on top. Cook on the stovetop without stirring for 2–3 minutes, until the edges begin to set.
  7. Transfer the skillet to the oven and bake for 15–20 minutes, until the center is set and no longer jiggles, a knife inserted in the center comes out clean, and an instant-read thermometer reads 160°F.
  8. Using an oven mitt (the handle will be very hot), remove the skillet. Let the frittata rest for 5 minutes, run a spatula around the edge, sprinkle with herbs, and cut into 6 wedges.
  9. Serve each wedge with a slice of whole-grain toast or a piece of fruit if you like, portioned to fit your plan.

Substitutions

  • Eggs: Use 6 whole eggs plus 1 cup liquid egg whites if you prefer.
  • Vegetables: Swap in chopped kale, zucchini, bell peppers, asparagus, or broccoli. Cook firmer vegetables until tender before adding the eggs.
  • Cheese: Use reduced-fat feta, goat cheese, or shredded Parmesan, or leave the cheese out and add extra herbs.
  • Milk: Any unsweetened milk works, including unsweetened almond or soy milk.
  • Pan: No oven-safe skillet? Cook the vegetables in any pan, then transfer them to a greased 9-inch pie dish, pour in the eggs, and bake 22–28 minutes.

Storage

Cool completely, then refrigerate wedges in an airtight container for up to 4 days. To freeze, wrap wedges individually and freeze for up to 2 months; thaw overnight in the refrigerator. Reheat in the microwave until hot throughout (165°F).

Notes

This frittata is built from non-starchy vegetables and protein. Add a fiber-rich carbohydrate on the side in the portion that fits the plan you've made with your healthcare team or dietitian.

An instant-read thermometer is the easiest way to know the center is fully cooked without overbaking.

Everyone's glucose response to the same meal is different. Nutrition values are estimates.

Sources & references
  1. American Diabetes Association. https://diabetes.org/
  2. Evert AB, et al. Nutrition Therapy for Adults With Diabetes or Prediabetes: A Consensus Report. Diabetes Care 2019;42(5):731–754. https://doi.org/10.2337/dci19-0014
  3. American Diabetes Association Professional Practice Committee. Standards of Care in Diabetes—2025. Diabetes Care 2025;48(Suppl 1). https://diabetesjournals.org/care/issue/48/Supplement_1
  4. U.S. Department of Agriculture & U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2020–2025. https://www.dietaryguidelines.gov/
  5. U.S. Food and Drug Administration. How to Understand and Use the Nutrition Facts Label. https://www.fda.gov/food/nutrition-facts-label/how-understand-and-use-nutrition-facts-label

Keep reading

Recipes

Search

Main menu

Shopping Cart

Your cart is currently empty

Shop now