Easy Low-Carb Crustless Tomato Pie Recipe

This crustless tomato pie is such a straightforward and tasty dish, bursting with fresh tomatoes, gooey cheese, and fragrant herbs. It’s a wonderful low-carb choice that doesn’t skimp on flavor or comfort!

One thing I adore about this recipe is how quick it is to pull together. Just slice up those juicy tomatoes, mix in the cheesy goodness, and slide it into the oven. It’s a perfect light and cheesy dish for those busy days when you want something satisfying without the fuss! 🥧🍅

Bright, melty, and wonderfully simple, this crustless tomato pie is the ultimate way to celebrate summer tomatoes. It’s an easy, low-carb bake that shines with fresh tomatoes, creamy cheese, and fresh herbs — no pie crust or extra steps needed.

Keep reading to find everything you need: a quick way to prep tomatoes so your pie won’t be soggy, a smooth egg-and-mayo custard that holds everything together, plus easy baking steps that guarantee a set, bubbly golden top. Whether you want a light weeknight dinner, a warm side dish, or a dish to prep ahead for casual get-togethers, this pie is dependable and delicious every time.

• Time: about 15 minutes prep plus 35–40 minutes baking (around 1 hour total).
• Diet-friendly: naturally gluten-free and low-carb since it skips the crust.
• Result: creamy and cheesy inside with a crisp golden top and that fresh tomato punch.
• What you’ll find in the instructions: tips on draining tomato moisture, layering cheese for texture, and simple swaps to make it your own.

Reasons to Try It

This crustless tomato pie is a real crowd-pleaser because it’s so easy, flavorful, and naturally low in carbs. Plus, it’s super cheesy — perfect when you want something light but packing a punch. The whole thing comes together fast, around 15 minutes prep and under an hour total, using ingredients you likely have on hand. The fresh tomatoes and herbs bring summery brightness that just hits the spot.

Because there’s no crust, it’s gluten-free by default and skips all the work of making pie dough. You can enjoy it as a light main with a crisp salad, serve it as a warm side dish, or make it ahead of time for laid-back dinners. Honestly, a crustless tomato pie with a bubbly golden top is always a hit!

Ingredients and Smart Swaps

• 4 large ripe tomatoes, sliced
• 1 teaspoon salt
• 1 cup shredded mozzarella cheese
• ½ cup grated Parmesan cheese
• 1 cup shredded sharp cheddar cheese
• 3 large eggs
• ½ cup mayonnaise
• ¼ cup chopped fresh basil (or 1 tablespoon dried basil)
• 2 cloves garlic, minced
• ½ teaspoon black pepper
• ½ teaspoon dried oregano
• Optional: ¼ teaspoon red pepper flakes for a little heat

Step-by-Step Method

1. Preheat oven to 375°F (190°C) and lightly grease a 9-inch pie or baking dish with cooking spray or butter.
2. Slice 4 large ripe tomatoes.
3. Lay tomato slices on paper towels or a cooling rack and sprinkle with 1 teaspoon salt to draw out moisture.
4. Let the salted tomato slices sit 10–15 minutes, then gently blot them dry with paper towels.
5. In a medium bowl, whisk together 3 large eggs, ½ cup mayonnaise, 2 minced garlic cloves, ½ teaspoon black pepper, ½ teaspoon dried oregano, and ¼ cup chopped fresh basil (or 1 tbsp dried) until smooth.
6. Spread half the shredded mozzarella and half the shredded sharp cheddar evenly across the bottom of the prepared dish.
7. Layer the blotted tomato slices evenly over the cheese.
8. Pour the egg-and-mayo mixture over the tomatoes, distributing it evenly.
9. Sprinkle the grated Parmesan plus the remaining mozzarella and cheddar evenly on top.

10. Bake for 35–40 minutes at 375°F (190°C), until the filling is set and the top is golden brown.

11. Remove from the oven and let the pie rest about 10 minutes before slicing.

Tips for Best Texture

The key to the perfect crustless pie is handling tomato moisture just right. Here’s how to get that ideal texture:

• Salting the tomato slices and letting them rest draws out excess liquid, which keeps your pie from turning soggy.
• After salting, pat them dry well with paper towels before adding them to your pie.
• A good combo of cheeses and the egg custard helps everything bind and get that lovely golden crust while baking.
• Don’t forget to let the pie cool for about 10 minutes after baking. This lets it set so it slices nicely without falling apart.

Following these steps means you’ll get a creamy, flavorful crustless tomato pie every time. Cooking made easy and delicious! 🍅

Mix-Ins and Flavor Twists

• Cheese swaps: Try Monterey Jack, Gouda, or a mix of feta and mozzarella for a tangy twist.
• Herb changes: Swap basil for thyme, parsley, or oregano; add a spoonful of pesto for an herbal punch.
• Veggie add-ins: Mix in sautéed spinach, caramelized onions, bell peppers, or mushrooms—just cook them first to get rid of moisture.
• Protein options: Toss in cooked bacon, diced ham, or Italian sausage for a heartier slice.
• Dairy-free version: Use plant-based shredded cheeses and vegan mayo for a great texture without dairy.
• Make individual pies: Use a greased muffin tin or ramekins to bake single-serving crustless tomato pies.
• Optional crust: For a more traditional feel, press a premade pie crust or puff pastry into your dish before adding the filling.

Storing, Freezing, and Reheating

After baking, let the pie cool completely before covering and storing it. Keep leftovers in an airtight container in the fridge for up to 3 days.

When reheating, warm slices in an oven preheated to 350°F (175°C) for 10-15 minutes uncovered to restore that crisp top, or use a microwave for 45-90 seconds if you’re in a hurry. Oven reheating keeps the texture best.

If you want to freeze leftovers, wrap cooled slices tightly in plastic wrap and foil or put them in a freezer-safe container for up to a month. Thaw overnight in the fridge before reheating.

Want to prep ahead? You can assemble the pie up to 24 hours before baking and keep it covered in the fridge. If prepping tomatoes ahead, salt and pat them dry right before assembling so no extra moisture sneaks in. Also, drain any liquid that pools if you store it preassembled but unbaked to avoid sogginess.

Common Questions Answered

Can I Use Canned Tomatoes Instead of Fresh?

Absolutely! If fresh tomatoes aren’t around, canned tomatoes are a fine substitute. Just be sure to drain them well to keep your crustless tomato pie from turning soggy.

How Do I Store Leftovers?

Keep leftover pie in an airtight container in the fridge for up to 3 days. Reheat in the microwave or warm up in the oven at 350°F (175°C) until heated through.

Can I Add Other Vegetables?

Yes! Feel free to toss in veggies like bell peppers, spinach, or onions. Just sauté them first to cut down on moisture and boost flavor.

How Can I Make This Dairy-Free?

For a dairy-free twist, swap the cheese for dairy-free alternatives and use vegan mayo. Make sure your veggies are free of dairy too, and you’ll have a tasty crustless tomato pie that works!