Cheesy Spinach and Onion Egg Muffins

By AislePrompt Editorial · Published 2026-04-23 · Updated 2026-04-23

Fluffy, protein-packed egg muffins loaded with spinach, onion, and cheddar cheese for a quick and satisfying protein-rich breakfast. This American-inspired recipe (low carb), ready in about 30 minutes, combines eggs, cheddar cheese, bell peppers into a breakfast that fuels the morning without the midday crash — make-ahead-friendly and balanced enough to anchor the first meal of the day. Each serving lands at about 120 calories and feeds 6, so it sits comfortably in a weekly breakfast rotation alongside fruit, yogurt, or coffee. 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.

Ingredients

• 6 large eggs
• 1/4 cup, grated cheddar cheese
• 1/4 cup, diced bell peppers
• 1/4 cup, diced onion
• 1/4 cup, chopped spinach
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1 tbsp, melted butter

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Instructions

1. Step 1: Preheat oven to 375°F. Grease a 6-cup muffin tin with 1 tbsp melted butter.
2. Step 2: Whisk 6 large eggs with 1/2 tsp salt and 1/4 tsp black pepper in a bowl.
3. Step 3: Stir in 1/4 cup grated cheddar cheese, 1/4 cup diced bell peppers, 1/4 cup diced onion, and 1/4 cup chopped spinach.
4. Step 4: Divide mixture evenly among muffin cups.
5. Step 5: Bake for 18-20 minutes until set and golden on top.
6. Step 6: Let cool for 5 minutes before removing from pan.