As an Amazon Associate, I earn from qualifying purchases.
This incredible Onion Pizza is simple, delicious, and so comforting. Sweet caramelized onions, fresh thyme, and cheese come together in a delicious and simple homemade vegetarian pizza recipe.
Nothing beats the rich and deep flavor of homemade French onion soup, and now, you get to enjoy it in pizza form!
If you’ve never had caramelized onions on pizza, you’re missing out on this unique and incredible topping.
For this recipe, I use my trusty cast iron pizza pan. A pizza stone or even a regular baking sheet will work as well. If you prefer an extra crispy crust and own a pizza steel, this is a great recipe to use it.
If you have leftover smoked cheese, use it on this chicken bacon ranch pizza.
HOW TO STORE AND REHEAT
Allow any leftover pizza to fully cool before storing slices in an air-tight container in the fridge for 2-3 days.
This pizza reheats amazingly well! Microwave it for 20-30 seconds, or at 340˚F for 2-6 minutes in an air fryer. You can read more details in our post on how to reheat pizza in an air fryer.
Pro Tips/Recipe Notes
- If cutting onions make you cry, put them in the fridge for 30-60 minutes prior to cutting them.
- Don’t make your onion slices razor-thin as they will break down and become mushy while caramelizing. You’ll want enough heft to keep them looking like onions when all is said and done.
- You can also caramelize onions in an Instant Pot.
- If you are using store-bought pizza dough, allow it to sit at room temperature for an hour or so before trying to roll it. Room temp pizza dough is much easier to work with.
- Fully preheat the oven with the pizza pan in it. Baking the pizza before the oven is hot will lead to a soggy crust.
- I prefer to parbake (partially bake) the pizza crust before putting on the toppings. This also helps prevent a soggy crust.
- Optional: brush the exposed edges of the crust on the finished pizza with a bit of olive oil and a light sprinkling of garlic salt before serving.
Onion Pizza
Equipment
- Pizza Peel
- Pizza Cutter
Ingredients
- 2 tbsp salted butter
- 4 cups onions, thinly sliced {~5 medium onions}
- 1 lb pizza dough {room temperature}
- all-purpose flour for working with dough
- 1.5 tsp cornmeal
- 1.5 tbsp olive oil
- 1 cup shredded mozzarella
- 1/2 cup shredded Gruyere
- fresh thyme {optional}
Instructions
- Preheat oven to 450˚F with a pizza stone or baking sheet in there during the preheating process.
- Melt butter in a large skillet over medium-lowheat.2 tbsp salted butter
- Add the onions and stir to combine with the melted butter.4 cups onions, thinly sliced
- Cook, stirring occasionally until the onions are reduced and a light caramel color (~25-30 minutes). Yield will be about 1.25 cups of onions.
- On a floured surface, flatten the pizza dough with your hands. Working in a circle, press it outward until it is at your desired thickness (usually about 1/3 in thick for thin crust or 1/2 in thick for normal crust).1 lb pizza dough, all-purpose flour for working with dough
- Reduce oven temp to 425˚F and carefully remove the pizza stone.
- Sprinkle the pizza stone with cornmeal and carefully (the pan will be hot!) transfer the flattened pizza dough onto the pan.1.5 tsp cornmeal
- Bake pizza dough at 425˚F for 5 minutes. Remove from the oven.
- Drizzle olive oil on top of the parbaked crust, and use a pastry brush to evenly distribute it.1.5 tbsp olive oil
- Top with half of the caramelized onions, mozzarella, and Gruyere. Repeat layering.1 cup shredded mozzarella, 1/2 cup shredded Gruyere
- Bake at 425˚F for 10 minutes or until cheese is melty and lightly browned.
- (optional) Sprinkle lightly with fresh thyme leaves.fresh thyme
Notes
- If you are using store-bought pizza dough, allow it to sit at room temperature for an hour or so before trying to roll it. Room temp pizza dough is much easier to work with.
- Optional: brush the crust of the finished pizza with a bit of olive oil and a sprinkling of garlic salt before serving.
- If you want to use the grill, cook at 425˚F for 10-15 minutes or until the cheese is melted and the crust is cooked through. Make sure the grill and pizza pan are fully preheated.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
