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Pesto Flatbread Pizza Recipe with caramelized onions – this EASY 4 ingredient pizza recipe is the perfect appetizer. Pesto, caramelized onions, and mozzarella baked onto a pizza crust – every time I make this people rave about it!

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Caramelized Onion Pesto Flatbread - this EASY 4 ingredient pizza recipe is the perfect appetizer. Pesto, caramelized onions, and mozzarella baked onto a pizza crust - every time I make this people rave about it!


Best Flatbread Pizza Recipe

Caramelized onion pesto flatbread is one of those easy appetizer recipes that I make for every party. Every single one! It’s always the first thing to disappear and people always rave about how amazing it is. I say thank you while they ooooh and aaaaah and pretend I slaved over a hot stove all day, when in fact it, takes less than 30 minutes to make this recipe.

Flatbread Pizza is so easy to make when you start with a prepared pizza crust and then top it with pesto and onions!

Caramelized Onion Pesto Flatbread Pizza - this EASY 4 ingredient pizza recipe is the perfect appetizer. Pesto, caramelized onions, and mozzarella baked onto a pizza crust - every time I make this people rave about it!

Ingredients in Easy Flatbread Pizza

  • Pizza Crust – I love taking semi-homemade help from the store and using Pillsbury pizza crust but this would also work with my homemade pizza crust recipe.
  • Pesto – While pizza sauce is great, homemade pesto is even better!
  • Onions – I cook these in some olive oil to get them all nice and caramelized for the top.
  • Mozzarella Cheese – shred your own cheese for best melting!

How to caramelize onions:

The onions are the most labor intensive thing to make for this recipe and even they’re easy! Usually I’ll make a big batch to use over a few days. I simply cook my onions over medium heat in some oil with a sprinkling of sugar until they’re browned and caramelized. I don’t love onions but I love them when they’re caramelized!!

flatbread with onions and pesto on top laid out on a cutting board

How to make a flatbread pizza

  • Spread your dough out onto a cookie sheet brushed with olive oil.
  • Top with pesto, cheese, and onions.
  • Bake then eat!

Variations

  • By default this is vegetarian flatbread pizza, but you could add sausage or pepperoni. Use your favorite toppings!
  • Add some of your favorite vegetables, like roasted red peppers or artichokes.
  • Top flatbread with goat cheese, parmesan cheese or crumble some feta on top instead, or even use fresh mozzarella.
flatbread with onions and pesto on top laid out on a cutting board

FAQs

Is flatbread dough the same as pizza dough?

I think of flatbread dough as a thinner crust pizza. Some restaurants make it crunchy and think like a cracker, but my recipe uses pizza crust.

What’s the secret to good pizza?

Cook the pizza at a high temperature to get a crisp bottom.

How to reheat leftover pizza?

The best way to reheat leftover pizza is in the air fryer or a frying pan to crisp up the bottom!

Caramelized Onion Pesto Flatbread Pizza

Caramelized Onion Pesto Flatbread

3.92 from 23 votes
Caramelized Onion Pesto Flatbread – this EASY 4 ingredient pizza recipe is the perfect appetizer. Pesto, caramelized onions, and mozzarella baked onto a pizza crust – every time I make this people rave about it!
Prep Time 5 minutes
Cook Time 25 minutes
Total Time 30 minutes
Yield 8 servings
Serving Size 1 serving

Ingredients
 

  • 1 tablespoon olive oil
  • 1 medium onion sliced
  • 1 teaspoon granulated sugar
  • 1 prepared pizza crust (from scratch or from the refrigerated section, like Pillsbury)
  • ½ cup pesto
  • 1 ½ cups shredded mozzarella cheese
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Instructions

  • Heat a 10-12” skillet over medium heat and add the oil. Swirl around the pan, then add the sliced onions. Sprinkle the onions with the sugar and toss to coat. Cover and cook 5-10 minutes over medium low, stirring often, until they start to brown, then remove the cover and continue cooking an additional 3-7 minutes, stirring often, until the onions are soft and caramel in color. Remove from pan and set aside to cool.
  • Preheat oven to 450°F. Line a cookie sheet with parchment paper. Unroll pizza crust. You can also use a prepared pizza crust (homemade or store-bought), one that makes one 12” pizza, but make it into a rectangle or an oblong rectangle.
  • Spread the pesto over the top of the pizza crust. Sprinkle with cheese and spread the cooled caramelized onions over the top.
  • Bake for 8-10 minutes, or until the bottom and edges are browned and the cheese is melted and bubbly. Slice and serve warm.

Recipe Video

Recipe Nutrition

Serving: 1serving | Calories: 146kcal | Carbohydrates: 3g | Protein: 5g | Fat: 12g | Saturated Fat: 4g | Cholesterol: 17mg | Sodium: 277mg | Potassium: 36mg | Sugar: 1g | Vitamin A: 455IU | Vitamin C: 1mg | Calcium: 134mg | Iron: 0.2mg
Nutritional information not guaranteed to be accurate
Course Main Course
Cuisine American

Other Favorite Pizza Recipes

Our favorite Flatbread pizza recipe – pesto pizza with caramelized onions! This is a great appetizer or main course – easy to make with semi-homemade pizza dough.



Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

3.92 from 23 votes (21 ratings without comment)

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19 Comments

  1. Tried your pesto and carmelized onion flatbread today for lunch.  It was a huge hit.  Thanks for sharing your recipe

  2. yessss, I accidentally sent an email today. THE WORST

    but THE BEST is any scenario with caramelized onions and carbs. Pesto is a plus.