This colorful casserole is a festive mix of red and green veggies—like bell peppers and spinach—baked together with creamy cheese. It’s a cheerful dish that adds joy to your table!
Honestly, who doesn’t love something that looks as good as it tastes? I always feel proud serving this at holiday dinners. It’s easy to make and oh-so-yummy! 🎄
Key Ingredients & Substitutions
Spinach: Fresh spinach is great for this dish, adding color and nutrients. If you’re out of spinach, consider using kale or Swiss chard. You can even use frozen spinach; just make sure to thaw and drain it well first.
Bell Peppers: The red and green bell peppers give this casserole a cheerful look and taste. Can’t find these? Try yellow or orange peppers instead for a sweet twist.
Cheese: Cheddar cheese is my go-to for that classic flavor. You can swap it for Monterey Jack or feta for a different profile. If you’re avoiding dairy, use a plant-based cheese or omit it altogether!
Eggs: Large eggs are essential here. If you want a lighter version, you can use egg whites or a vegan egg replacement, though it may alter the texture slightly.
How Do You Ensure the Casserole is Cooked Perfectly?
Cooking the casserole just right can be tricky, but here are some tips:
- Mix the egg and milk mixture thoroughly to prevent any separation. I usually whisk vigorously!
- When adding the cooked veggies, let them cool slightly so they don’t cook the eggs early.
- Check your oven time; ovens vary! Look for a firm center that springs back when touched, and a golden-brown top.
Letting it cool a bit after baking helps it set, making slicing easier. Enjoy your festive dish!

Red & Green Christmas Casserole
Ingredients You’ll Need:
For the Casserole:
- 2 cups fresh spinach, chopped
- 1 cup red bell pepper, diced
- 1 cup green bell pepper, diced
- 1 medium onion, diced
- 8 large eggs
- 1 cup shredded cheddar cheese (or your favorite cheese)
- 1/2 cup milk
- 2 cloves garlic, minced
- 1 tablespoon olive oil
- Salt and pepper to taste
Time Needed:
This recipe takes about 10 minutes to prepare and 30-35 minutes to bake. So, in total, you’ll spend around 45-50 minutes from start to finish, giving you a lovely, colorful dish for your holiday table in no time!
Step-by-Step Instructions:
1. Preheat and Prepare:
Start by preheating your oven to 350°F (175°C). While it’s heating up, lightly grease a 9×9-inch baking dish to ensure your casserole doesn’t stick.
2. Sauté the Aromatics:
In a skillet over medium heat, add the olive oil. Once hot, toss in the diced onion and minced garlic. Sauté for about 3-5 minutes, until the onions are softened and fragrant.
3. Cook the Peppers:
Add the diced red and green bell peppers to the skillet. Stir and cook for another 3-4 minutes until they are slightly tender. This step adds lots of color and flavor!
4. Add the Spinach:
Next, stir in the chopped spinach and cook for about 2 minutes until it’s just wilted. Turn off the heat and let your mixture cool slightly while you prepare the egg mixture.
5. Whisk the Eggs:
In a large mixing bowl, crack the 8 large eggs and add the milk, salt, and pepper. Whisk everything together until well combined and frothy.
6. Combine Everything:
Add the cooked vegetable mixture (onions, garlic, bell peppers, and spinach) into the egg mixture. Sprinkle in the shredded cheese and use a spoon or spatula to carefully stir everything together.
7. Bake the Casserole:
Pour the combined mixture into your greased baking dish, spreading it out evenly. Place it in the preheated oven and bake for 30-35 minutes, or until the casserole is set and the top is golden brown.
8. Cool and Serve:
Once baked, remove the casserole from the oven and let it cool for a few minutes. This makes it easier to slice. Cut into squares and serve warm. Enjoy every festive bite!
This Red & Green Christmas Casserole is sure to add a splash of color and cheer to your holiday gatherings! 🎄
Can I Use Different Vegetables in This Casserole?
Absolutely! Feel free to swap out the spinach, bell peppers, or onion for your favorite veggies. Zucchini, mushrooms, or even artichokes can work well. Just make sure to chop anything large into bite-sized pieces!
Can I Make This Casserole Ahead of Time?
Yes, you can! Prepare the casserole up to the baking step, cover it tightly, and refrigerate for up to 24 hours. When you’re ready to bake, allow it to come to room temperature first, then pop it in the oven as directed!
How Do I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. You can reheat individual portions in the microwave or warm them in the oven at 350°F (175°C) until heated through.
What’s a Good Side Dish to Serve With This Casserole?
This casserole pairs wonderfully with a simple green salad or some roasted potatoes. You could also serve it with a side of festive fruit for a touch of sweetness!



