Grilled Brown Egg and Spinach Frittata

By Lauren Mitchell, Test Kitchen Director · Reviewed by AislePrompt Editorial · Published 2026-04-25 · Updated 2026-04-25

A fluffy frittata combining nutrient-rich brown eggs and fresh spinach, finished on the grill for a smoky touch. This Mediterranean-inspired curry recipe, ready in about 30 minutes, pairs brown eggs, fresh spinach, feta cheese for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 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.

Ingredients

• 8 large brown eggs
• 4 cups, roughly chopped fresh spinach
• 1/2 cup crumbled feta cheese
• 2 tbsp olive oil
• 1 small, thinly sliced red onion
• 1 tsp salt
• 1/2 tsp black pepper
• 2 tbsp chopped, for garnish fresh parsley

Instructions

1. Step 1: Preheat grill to medium heat (about 350°F) and heat 2 tbsp olive oil in a grill-safe cast iron skillet.
2. Step 2: Add 1 small thinly sliced red onion and sauté over direct heat for 4-5 minutes until softened and slightly caramelized.
3. Step 3: Stir in 4 cups roughly chopped fresh spinach and cook for 2 minutes until wilted.
4. Step 4: In a large bowl, whisk 8 large brown eggs with 1 tsp salt and 1/2 tsp black pepper until fully blended.
5. Step 5: Pour the eggs evenly over the spinach and onion in the skillet, then sprinkle 1/2 cup crumbled feta cheese on top.
6. Step 6: Cover the skillet with a grill lid or foil and cook on indirect heat for 12-15 minutes until the eggs are set and the edges are lightly golden.
7. Step 7: Remove from grill and garnish with 2 tbsp chopped fresh parsley before slicing and serving warm.