Sausage and Spinach Frittata with Cheddar

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A fluffy, protein-packed frittata loaded with savory sausage and fresh spinach, topped with melted cheddar cheese. This american-inspired keto (high-protein) ready in about 30 minutes pairs keto-friendly breakfast sausage, large eggs, fresh spinach for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 380 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 20 min Serves 4 American cuisine 380 cal/serving
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Ingredients

Instructions

  1. Step 1: Heat 1 tbsp olive oil in an oven-safe skillet over medium heat. Add 8 oz sausage and cook for 6-8 minutes, breaking into small pieces, until browned and cooked through.
  2. Step 2: Add 2 cups fresh spinach to the skillet, stirring until wilted and fully collapsed, about 2 minutes.
  3. Step 3: Whisk 6 large eggs in a bowl with 1/4 tsp salt, 1/8 tsp black pepper, and 1/2 tsp dried oregano until smooth.
  4. Step 4: Pour the egg mixture over the sausage and spinach in the skillet, ensuring even distribution.
  5. Step 5: Cook on the stovetop for 4-5 minutes over low heat until edges set but center is still slightly runny.
  6. Step 6: Transfer skillet to a preheated 375°F oven and bake for 10-12 minutes until the center is fully set and golden.
  7. Step 7: Sprinkle 1/2 cup shredded cheddar cheese evenly over the top and return to oven for 2 minutes to melt.

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Frequently asked questions

How long does Sausage and Spinach Frittata with Cheddar take to make?

Total time is about 30 minutes (10 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Sausage and Spinach Frittata with Cheddar?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep large eggs from drying out.

Can I substitute ingredients in Sausage and Spinach Frittata with Cheddar?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Sausage and Spinach Frittata with Cheddar for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Sausage and Spinach Frittata with Cheddar high-protein?

Yes — this recipe is tagged high-protein based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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