Low Carb Egg & Tomato Casserole for Quick, Cozy Meals
There’s something downright comforting about a warm, cheesy casserole, especially when it’s healthy *and* easy to make. This low carb egg & tomato casserole is everything you need in a quick go-to meal—whether you’re craving a cozy breakfast, a lazy dinner, or a simple meal prep solution. It’s packed with juicy tomatoes, fluffy baked eggs, a touch of garlic, and gooey cheese—all baked into a low-carb, keto-friendly wonder you’ll make again and again!
Why You’ll Love This Low Carb Egg & Tomato Casserole
- Low carb & ketogenic-friendly – Perfect for your clean eating goals
- Super versatile – Enjoy it for breakfast, lunch, or dinner
- Quick & easy – Just 10 minutes of prep and into the oven it goes
- Cozy & satisfying – Creamy eggs, melty cheese, and roasted tomatoes
- Meal prep dream – Stores well and reheats like magic
This cozy casserole will absolutely hit the spot—it’s also gluten-free and easy to make vegetarian or even dairy-free with a couple tweaks. Let’s dive into this easy comfort food recipe that’s ready for your table in under 40 minutes from start to finish.
Ingredients You’ll Need
You probably have most of these in your kitchen already, which makes this perfect for those days you want to whip something up without a grocery run.
- 8 large eggs
- 1 ½ cups cherry tomatoes, halved
- 1 small onion, finely chopped
- 2 garlic cloves, minced
- ½ cup heavy cream (or unsweetened almond milk for dairy-free)
- 1 cup shredded mozzarella or cheddar cheese
- 2 tbsp extra virgin olive oil
- Salt + pepper to taste
- Fresh basil or oregano (optional for topping)
Optional Add-ins:
- Crumbled cooked sausage or bacon 🥓
- Baby spinach or kale for added greens
- Diced bell peppers or mushrooms
How to Make Your Low Carb Egg & Tomato Casserole
Step-by-Step Instructions
- Preheat oven to 375°F (190°C) and lightly grease a 9×13 inch baking dish with olive oil or non-stick spray.
- Sauté veggies: In a skillet over medium heat, warm the olive oil. Add onions and garlic, and cook for about 3 minutes until fragrant. Add tomatoes and cook another 2–3 minutes, just until slightly soft.
- Whisk the eggs: In a large bowl, whisk together the eggs, heavy cream, salt, and pepper.
- Combine everything: Spread the sautéed veggies evenly into the baking dish. Pour in the egg mixture, then sprinkle shredded cheese on top.
- Bake uncovered for 25–30 minutes or until set and lightly golden on top.
- Garnish with fresh herbs and let cool for 5 minutes before slicing and serving.
Tips to Make This Casserole Extra Delicious
- Use heirloom or grape tomatoes for an extra sweet, juicy punch 🍅
- Don’t overbake—check for doneness at 25 minutes to keep the eggs tender, not rubbery
- Swap mozzarella for crumbled feta or spicy pepper jack for a flavor twist
- Top with sliced avocado or a drizzle of hot sauce for extra indulgence
Make It Your Way: Substitutions & Dietary Tips
This dish is already low carb, gluten-free, and easy to customize. Here’s how to make it work for different lifestyles:
- Vegan: Use a plant-based egg substitute (like JUST Egg), vegan cheese, and almond milk
- Dairy-Free: Swap out cheese and cream for dairy-free options like coconut milk or nutritional yeast for that umami hit
- Keto: Stick with heavy cream and full-fat cheese for a higher fat ratio
- Add protein: Toss in cooked sausage, shredded chicken, or even leftover roasted turkey for meat lovers
More Quick & Healthy Low Carb Recipes
Looking for other simple low carb meals to keep things cozy and clean? Check these out:
Storing & Reheating This Egg & Tomato Casserole
This casserole stores like a champ and reheats perfectly in the microwave or oven.
- Fridge: Store leftovers in an airtight container for up to 4 days
- Reheat: Microwave in 30-second bursts or heat in a 325°F oven until warm
Perfect for weekday meal prep or a weekend brunch buffet!
FAQ About Low Carb Egg & Tomato Casserole
Can I freeze this casserole?
Absolutely! Just let it cool fully, then slice and store in freezer-safe containers. Freeze for up to 2 months. Thaw overnight in the fridge before reheating.
Can I make this ahead of time?
Yes! You can assemble the casserole the night before, cover, refrigerate, and bake it fresh in the morning.
What kind of cheese works best?
Mozzarella, cheddar, Monterey Jack, or goat cheese all work great! Spice lovers may enjoy pepper jack too.
Will kids eat this?
Totally kid-friendly, especially with a sprinkle of cheese and a little ketchup on the side. You can hide some spinach in there too!
Is this recipe good for diabetic-friendly diets?
Yes, it’s very low in carbs and high in protein—great for maintaining stable blood sugar. Of course, always consult your healthcare provider for personalized advice.
Let’s Get Social!
If you make this low carb egg & tomato casserole, we wanna see it! Tag us @gotofoodrecipes on Instagram and use the hashtag #CozyCasseroleLove. 💛
Love this recipe? Pin it for later or share it with your favorite low-carb foodie crew 😊
Join the Cozy Table!
If this recipe warmed your heart (and your belly), don’t forget to leave a ⭐️⭐️⭐️⭐️⭐️ rating and drop a comment below. We love hearing from you!
Hungry for more cozy, healthy eats? Join our email list and get fresh recipes in your inbox weekly.
Our Favorite Kitchen Tools for This Recipe
- Casserole baking dish by Staub – perfect heat retention and beautiful on the table
- OXO Balloon Whisk – makes fluffy eggs happen!
Need more inspiration? Check out our keto-friendly recipes.
