Vegetable and Egg Breakfast Bake

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

A nutrient-dense, protein-rich breakfast casserole with leafy greens and colorful vegetables, baked to perfection. This american-inspired whole30 ready in about 40 minutes combines large eggs, spinach, cherry tomatoes 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 280 calories and feeds 4, 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.

Prep: 15 min Cook: 25 min Serves 4 American cuisine 280 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Lightly grease a 9x9 inch baking dish with 1/2 tbsp avocado oil.
  2. Step 2: Heat remaining 1/2 tbsp avocado oil in a small skillet over medium heat. Add diced onion and sauté for 3 minutes until translucent.
  3. Step 3: Add chopped spinach and cook for 2 minutes until wilted; remove from heat and let cool slightly.
  4. Step 4: In a large bowl, whisk together eggs, 1/2 tsp salt, and 1/4 tsp black pepper. Stir in cooled spinach mixture and halved cherry tomatoes.
  5. Step 5: Pour egg mixture into prepared baking dish. Bake for 25-30 minutes until edges are set and center is just firm when gently shaken.

Frequently asked questions

How long does Vegetable and Egg Breakfast Bake take to make?

Total time is about 40 minutes (15 min prep + 25 min cook). Most home cooks find this fits comfortably into a busy morning; prep components the night before to save active time.

How do I store leftover Vegetable and Egg Breakfast Bake?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven; egg- or grain-based items may need a splash of milk or water to refresh texture. Cold-served items (overnight oats, smoothies) keep 2–3 days in the fridge.

Can I substitute ingredients in Vegetable and Egg Breakfast Bake?

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 Vegetable and Egg Breakfast Bake 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.

What goes well with Vegetable and Egg Breakfast Bake?

American whole30 like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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