Easy Crustless Tomato Pie

Juicy tomatoes and a bubbling cheese topping are what make crustless tomato pie worth keeping in the regular rotation. You get all the best parts of a savory tomato pie…

By Willow • June 19, 2026 • Reading time: 9 min

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Juicy tomatoes and a bubbling cheese topping are what make crustless tomato pie worth keeping in the regular rotation. You get all the best parts of a savory tomato pie — the salty, creamy, herb-filled center and the browned top — without waiting on a crust or worrying about a soggy bottom. The tomatoes stay front and center, but the cheese mixture turns into a savory blanket that sets just enough to slice cleanly once it rests.

The trick is draining the tomatoes before they go into the dish. Salt pulls out extra moisture fast, and that step keeps the finished pie from turning watery underneath the cheese. The topping itself is a simple mix of mozzarella for melt, cheddar for sharper flavor, and Parmesan for salt and structure. Mayonnaise might sound unusual here, but it binds everything into a creamy layer that bakes up smooth instead of greasy.

Below, I’ll walk through the little details that keep this pie from slipping into tomato soup territory, plus a few ways to adapt it if you want to change the cheese or make it fit what you already have on hand.

The Reason This Pie Stays Firm Instead of Turning Watery

Tomatoes carry a lot of moisture, and that moisture is the difference between a neat slice and a loose, puddly filling. Salting the slices before they go into the dish pulls out some of that water first, which keeps the bottom of the pie from steaming itself soft in the oven. That rest after baking matters too. The cheese topping needs a few minutes to set, and cutting too soon sends everything sliding apart.

The other mistake with tomato pie is using too much filling in a deep pile. Layer the slices in a single, even arrangement so the heat can move through the dish and the topping can brown on top instead of just melting into the middle. A little overlap is fine. A heavy mound is not.

What Each Ingredient Is Actually Doing in This Dish

• Tomatoes — Use ripe but still firm tomatoes so they slice neatly and don’t collapse while baking. Very soft tomatoes release more water and can make the whole pie loose. If your tomatoes are especially juicy, give them the full 15 minutes with salt and pat them dry well.
• Mozzarella and sharp cheddar — Mozzarella brings the melt, while cheddar gives the pie a stronger savory edge and better color. You can swap in Monterey Jack for a milder version, but the finished pie will taste less bold. Freshly shredded cheese melts better than bagged because it doesn’t have the same anti-caking coating.
• Mayonnaise — This is what turns the topping into a creamy, spreadable layer that bakes into a cohesive cap. It’s not there to taste like mayo. It keeps the cheese from clumping and helps the top brown without drying out.
• Parmesan — Parmesan adds salt and a little structure, which helps the topping set as it bakes. Grated Parmesan works best here. The finely shredded kind won’t blend as smoothly into the mixture.
• Fresh basil and green onions — These are the bright, fresh notes that keep the pie from tasting heavy. Basil is worth using fresh if you have it, because dried basil gets dusty in a dish like this. The green onions bring a mild bite without overpowering the tomatoes.
• Garlic powder and black pepper — Garlic powder seasons the topping evenly, and black pepper gives the whole pie a little sharpness. Fresh garlic can scorch in the oven, so the powder is the better tool here.

Building the Layers So the Bottom Stays Dry

Salting and drying the tomatoes

Lay the tomato slices on paper towels and salt them evenly. After 15 minutes, you’ll see beads of moisture on the surface and some liquid pooling underneath. That’s the water you don’t want ending up in the pie. Pat the slices dry before layering or the cheese mixture will slide around instead of sitting on top.

Assembling the pie dish

Lightly grease the dish, then arrange the tomatoes in an even layer. Overlapping is fine as long as the slices aren’t stacked too thickly. Sprinkle the basil and green onions over the tomatoes so the herbs are distributed across the whole pie, not trapped in one corner. A shallow, even layer bakes more steadily and gives the cheese topping a chance to brown instead of just melt.

Mixing and spreading the topping

Stir the mozzarella, cheddar, mayonnaise, Parmesan, garlic powder, and pepper until the mixture looks fully combined and thick. Spread it over the tomatoes all the way to the edges. If the topping looks loose in the bowl, it usually means the cheese was packed lightly or the mayo ratio is off; it should be thick enough to mound without running.

Baking and resting

Bake until the top is bubbling at the edges and turning golden in spots. If the center still looks pale and soft, give it a few more minutes; the topping should look set, not wet. Let the pie rest for 10 minutes before slicing so the cheese firms up and the juices settle back down into the dish.

Three Ways to Adapt Crustless Tomato Pie Without Losing the Point

Questions I Get Asked About This Recipe

Easy Crustless Tomato Pie

Easy crustless tomato pie with juicy tomato slices, a creamy cheese topping, and a golden-bubbly bake at 375°F. Layered with mozzarella, cheddar, mayo, Parmesan, green onions, basil, garlic powder, and pepper for a tender, crust-free slice.

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Prep Time 15 minutes mins

Cook Time 35 minutes mins

(salt + moisture removal, plus resting) 15 minutes mins

Total Time 1 hour hr 5 minutes mins

Servings: 6 servings

Course: Brunch, Dinner, Lunch

Cuisine: American

Calories: 390

Ingredients Equipment Method Notes

Ingredients

  

Tomatoes

• 4 large ripe tomatoes Sliced.
• 1 tsp salt Used to draw out moisture.

Cheese topping

• 1 cup shredded mozzarella cheese
• 1 cup shredded sharp cheddar cheese
• 0.5 cup mayonnaise
• 0.25 cup grated Parmesan cheese

Herbs and seasonings

• 2 green onions Sliced.
• 1 tbsp fresh basil Chopped.
• 1 tsp garlic powder
• 0.5 tsp black pepper

Pan

• 1 cooking spray For greasing the dish.

Equipment

• 1 sheet pan

Method

 

Prep

1. Preheat your oven to 375°F (190°C) and set out a 9-inch pie dish for baking.
2. Lightly grease a 9-inch pie dish with cooking spray so the baked pie releases cleanly.
3. Arrange tomato slices on paper towels and sprinkle with salt to draw out excess moisture.
4. Let the tomatoes stand for 15 minutes, then pat them dry to prevent a watery pie.

Assemble

1. Layer the dried tomato slices in the pie dish in an even layer for consistent baking.
2. Sprinkle the top with green onions and chopped basil for fresh, aromatic flavor in every bite.
3. In a bowl, combine mozzarella, cheddar, mayonnaise, Parmesan, garlic powder, and black pepper until evenly mixed.
4. Spread the cheese mixture evenly over the tomatoes to form a cohesive, golden top.

Bake and serve

1. Bake at 375°F (190°C) for 30–35 minutes, until the top is golden and bubbly.
2. Let the crustless tomato pie rest for 10 minutes before slicing so it sets up cleanly.
3. Serve warm or at room temperature for best texture and flavor.

Notes

For less moisture and better sliceable texture, salt the tomatoes, drain them well, and pat fully dry before layering. Refrigerate leftovers in a covered container for up to 3–4 days; reheat in a 350°F oven until warmed through. Freezing isn’t recommended because tomatoes can become watery after thawing. For a lighter option, swap mayonnaise for plain Greek yogurt in the cheese mixture.