A keto sausage spinach frittata is the lazy cook’s answer to a big breakfast. You brown the sausage, wilt the greens in the same skillet, pour in the eggs, and let the oven do the rest while you get dressed.
Cut into six wedges, each slice has 3 g net carbs, 27 g of protein, and about 500 calories, all worked out from the ingredients below. That’s a real breakfast, not a snack that leaves you hunting for food by ten.
Want to know whether that protein number fits your day? Plug your details into my free protein calculator and you’ll have a daily target in under a minute.
- 3 g net carbs and 27 g protein in every wedge, roughly 500 calories.
- Everything happens in one oven-safe skillet, from browning the sausage to baking the eggs.
- Squeeze the spinach down hard in the pan so its water cooks off before the eggs go in.
- Pull it when the middle barely jiggles. Carryover heat finishes the job and keeps it tender.
- Slices hold 4 days in the fridge, so one bake covers most of your workweek.
Why This Works on Keto
Breakfast is where a lot of low-carb plans quietly fall apart. Toast, granola, and pastries are the default almost everywhere, so having something filling already sliced in the fridge takes the guesswork out of the first meal of the day.
Stuck on the scale? Reset it in 14 days. No gimmicks.
One simple habit a day, plus the truth about the diet myths keeping you stuck. No starvation, no magic pills, no cutting entire food groups. From a NASM-certified coach with more than 20 years of results.
- 14 days, one habit a day
- No fads or starving
- Free, straight to your inbox
Want the details first? See everything inside the free guide
The combination here is simple math. Eggs and sausage bring protein and fat with almost no carbohydrate, and the cheese adds both flavor and more protein. Spinach cooks down to a fraction of its raw volume, so you get a pile of greens for very few carbs.
A breakfast with this much protein tends to keep appetite quiet for hours. That steadiness makes it easier to skip the mid-morning grazing that adds up without you noticing.
A Few Notes on the Ingredients
Italian sausage gives the frittata its seasoning, so you barely need to add anything else. Buy bulk sausage or squeeze it out of the casings, and scan the label for sugar or corn syrup, which some brands sneak in.
Spinach looks like far too much when it hits the pan. Keep stirring and it collapses in about two minutes. Baby spinach needs no chopping, which saves a step on busy mornings.
Heavy cream in the egg mixture is what makes the texture custardy instead of spongy. A quarter cup is plenty; more than that and the center takes much longer to set.
Parmesan and cheddar do different jobs. The cheddar melts into the eggs, while the parmesan on top browns into a savory crust.
Keto Sausage and Spinach Frittata
Ingredients
Equipment
Method
- Heat the oven to 375°F with a rack in the middle.
- Crumble the sausage into a 10-inch oven-safe skillet and cook over medium-high heat, breaking it up, until browned and cooked through, 7 to 8 minutes. Leave the fat in the pan.
- Mince the garlic and stir it in for 30 seconds. Add the spinach in handfuls, stirring and pressing it down until fully wilted and any liquid has cooked off, about 3 minutes.
- In a bowl, whisk the eggs, heavy cream, salt, and pepper until smooth, then stir in the cheddar.
- Spread the sausage and spinach evenly across the skillet and pour the egg mixture over it. Cook on the stove without stirring for 2 minutes, until the edges begin to set.
- Scatter the parmesan over the top and move the skillet to the oven. Bake 14 to 16 minutes, until the edges are puffed and the center only jiggles slightly.
- Rest 5 minutes, then slice into 6 wedges and serve.
Nutrition
Notes
Made this recipe?
Tap a star below to rate it. A written review is optional, but I read every one.Make It Your Own
- Dairy free: Leave out both cheeses and swap the cream for unsweetened almond milk. Add an extra pinch of salt to make up for the missing parmesan.
- Different greens: Chopped kale or Swiss chard works in place of spinach. Give tougher greens a couple of extra minutes in the pan.
- Swap the protein: Ground pork seasoned with fennel and garlic, crumbled bacon, or diced ham all work instead of Italian sausage.
- Add vegetables: Sliced mushrooms or diced zucchini can go in with the sausage. Cook them until their liquid is gone.
- Spicier: Use hot Italian sausage or add a pinch of red pepper flakes to the eggs.
Storage, Leftovers, and Serving
Let the frittata cool, then cut it into six wedges and store them in a covered container in the fridge for up to 4 days. Wrapped slices also freeze well for up to 2 months.
Reheat a wedge in the microwave for about 45 seconds, or in a 325°F oven for 8 to 10 minutes. It’s also good cold or at room temperature, which makes it an easy packed breakfast.
Pair a slice with a few avocado slices or a small side salad. For more ideas to rotate through the week, see my keto breakfast recipes.
Frequently Asked Questions
Why Did My Frittata Turn Out Rubbery?
Rubbery frittata almost always means it baked too long or too hot. Take it out when the edges are set but the center still wobbles slightly. The heat stored in the skillet finishes cooking the middle in the next few minutes.
How Many Carbs Are in a Slice of This Frittata?
Each of the six wedges has about 3 g net carbs, along with 27 g protein and 42 g fat. The eggs, sausage, and cheese carry almost no carbohydrate, and the spinach adds only a little.
Can I Make This Without a Cast Iron Skillet?
Yes. Any oven-safe skillet works. You can also brown the sausage and spinach in a regular pan, then transfer everything to a greased 9-inch pie dish and bake a few minutes longer, until the center is just set.
Your This-Week Plan
Here’s the experiment: bake this frittata on Sunday and eat a wedge for breakfast Monday through Thursday. Keep a quick note of what time you first feel genuinely hungry each day. If lunch comes around before the cravings do, this recipe has earned a permanent spot in your rotation.
This recipe is for general education, not medical advice. Nutrition values are estimates and will vary with brands. If you’re pregnant, have a health condition, or take medication for blood sugar or blood pressure, check with your doctor before starting keto.
Practical, no-gimmick tips on healthy aging, hormones, fitness and nutrition.
- One email a week, no spam
- Real tips on aging, hormones, fitness and food
- Unsubscribe anytime
Free. I never share your email.
