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+ servings
Small onion pizza with tomato slices on top with one slice being removed.

Onion Pizza with Tomato Recipe

Valentina K. Wein
This Onion Pizza recipe is unique and utterly scrumptious. Caramelized onions are essentially the sauce, it's beautiful and delicious and makes for an excellent main course. With a gluten-free crust made out of potato, or your own favorite crust, you'll keep coming back for more!
Prep Time 20 minutes
Cook Time 15 minutes
Making the Crust 1 hour 45 minutes
Total Time 2 hours 20 minutes
Course Main Course
Cuisine Italian, American
Servings 2
Calories 413 kcal


  • 1 (10-inch) Smashed Potato Pizza Crust (Click here for the recipe)
  • about 1 tablespoon olive oil for the pan
  • cups thinly sliced yellow onion
  • 1 teaspoon minced garlic
  • 1 tablespoon tomato paste
  • ¾ cup grated mozzarella
  • about 6 large basil leaves
  • 1 Roma tomato, washed, dried, thinly sliced
  • extra virgin olive oil for drizzling
  • salt and freshly ground black pepper


  • Set oven. Preheat the oven to 400°F, and adjust a rack to the center.
  • Make onion mixture. Coat the bottom of a medium-sized skillet with olive oil and place it over medium-high heat. Sauté the onion, stirring often, until the edges are golden, about 10 minutes. (You can also cook the onions longer and at a lower temperature for a deeper and darker caramelization.)
    Add garlic and tomato paste and cook for another minute or so, until it's very aromatic. Season to taste with salt and pepper. (Here's how.)
  • Assemble. Evenly spread the onion-tomato mixture on the potato crust, followed by the grated mozzarella, basil leaves and tomato slices. Drizzle with pizza with olive oil and then sprinkle it with salt and pepper.
  • Bake. Place in the preheated 400°F oven and bake until the cheese is melted and it's sizzling, about 15 minutes.
  • Serve. Let the pizza sit for about 10 minutes, slice and serve.


Calorie count is only an estimate.


Calories: 413kcal
Keywords gluten-free pizza recipes, pizzas for sharing
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