Caramelized Onion and Garlic Pizza

Name: Caramelized Onion and Garlic Pizza
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Yield: 4 servings
Cuisine: Italian
Ingredients: 1 pound (450 g) store-bought or homemade pizza dough, at room temperature for 30 minutes; 4 tablespoons (60 ml) extra-virgin olive oil; 2½ pounds (1100 g) yellow onions, halved and thinly sliced into half-moons (about ¼-inch / 0.5 cm thick); 12 cloves (50 g) garlic cloves, smashed with the flat of a knife but left whole; to taste kosher salt; to taste freshly ground black pepper; 8 ounces (225 g) fresh mozzarella, torn into bite-sized pieces; 2 ounces (60 g) Parmigiano-Reggiano, finely grated; 1½ tablespoons (22 ml) aged balsamic vinegar; 1 teaspoon (1 g) fresh thyme, leaves stripped from stems (optional); 1 cup (30 g) fresh arugula, lightly packed (optional)

From the MyKitchenBank Kitchen

A sophisticated Italian-style pizza with deeply caramelized onions and roasted garlic that have transformed into sweet, mellow strands. The filling is layered on a crispy-crusted dough and finished with fresh mozzarella, aged balsamic, and herbs. This is comfort food elevated—the slow cooking concentrates the onion and garlic flavors into something rich and almost luxurious, balancing salty cheese and peppery arugula if desired.

Prep: 20 min
Cook: 45 min
Wait: 30 min
Total: 1 hr 35 min
Makes: 1 pizza (4 slices)

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Ingredients

4 servings

1 pound (450 g) store-bought or homemade pizza dough, at room temperature for 30 minutes
4 tablespoons (60 ml) extra-virgin olive oil
2½ pounds (1100 g) yellow onions, halved and thinly sliced into half-moons (about ¼-inch / 0.5 cm thick)
12 cloves (50 g) garlic cloves, smashed with the flat of a knife but left whole
to taste kosher salt
to taste freshly ground black pepper
8 ounces (225 g) fresh mozzarella, torn into bite-sized pieces
2 ounces (60 g) Parmigiano-Reggiano, finely grated
1½ tablespoons (22 ml) aged balsamic vinegar
1 teaspoon (1 g) fresh thyme, leaves stripped from stems (optional)
1 cup (30 g) fresh arugula, lightly packed (optional)

Equipment (6)

Large heavy-bottomed skillet (12-inch / 30 cm recommended)
Wooden spoon
Pizza stone or baking sheet
Pizza peel or large flat spatula
Small bowl
Chef's knife

Steps

Before you start

Remove pizza dough from fridge 30 minutes before baking so it comes to room temperature
Preheat oven to 475°F (240°C) and place a pizza stone or baking sheet on the middle rack
Have all ingredients prepped and within reach—timing is important once caramelizing begins

1
Heat skillet and begin caramelizing
- Pour 2 tablespoons of olive oil into a large heavy-bottomed 12-inch skillet and place over medium-high heat.
- Once the oil shimmers, add the sliced onions and smashed garlic cloves all at once.
- Stir well to coat everything in oil.
- Season with a generous pinch of kosher salt and black pepper.
- The onions will release moisture initially and fill the pan—this is normal.
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Ready when: Onions begin to soften and release liquid
Tip: Do not skip the initial high heat—it helps develop deeper flavor faster.
2
Lower heat and continue cooking
- After 3–4 minutes, reduce the heat to medium.
- Continue stirring every 2–3 minutes.
- The onions will gradually go from translucent to pale golden to deeper amber over the next 25–30 minutes.
- As they release liquid and begin to stick slightly to the pan, add the remaining 2 tablespoons of olive oil to prevent sticking.
- Taste occasionally and add salt and pepper as needed.
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Ready when: Onions are golden brown and collapsed to about one-third their original volume; garlic is soft and caramelized
Tip: Do not rush this step by raising the heat—high heat will burn them. Patient, slow cooking creates the sweet, complex flavor.
3
Add balsamic vinegar and finish onions
- Once the onions are deeply caramelized, pour the balsamic vinegar into the pan, stir well, and let it reduce for 1–2 minutes over medium heat.
- Remove from heat and taste.
- Adjust salt and pepper.
- If using fresh thyme, stir it in now.
- Let the mixture cool for 5 minutes.
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Ready when: Balsamic is almost fully evaporated and caramelized onions taste sweet and mellow
Tip: The balsamic adds depth and a subtle tang—do not omit it or use regular vinegar.
4
Prepare and stretch dough
- Lightly dust a work surface and a pizza peel or large flat spatula with flour.
- Place the room-temperature dough on the surface and gently stretch it into a 12–14 inch circle (it should be about ¼-inch thick).
- Work from the center outward, letting gravity help.
- If the dough springs back, let it rest for 2 minutes and stretch again.
- The edges should be slightly thicker than the center to form a little rim.
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Ready when: Dough is stretched to even thickness with no thin spots
Tip: Avoid tearing the dough by stretching gently; if you do tear it, pinch it closed or let it rest before continuing.
5
Transfer dough to preheated stoneOven 475°F / 245°C
- Carefully slide the stretched dough onto the preheated pizza stone or baking sheet in the oven.
- (The stone should already be at 475°F / 240°C.) Bake for 4–5 minutes until the surface is set but not yet browning—the bottom should be pale and slightly firm to the touch when you gently lift the edge with a peel.
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Ready when: Dough surface is opaque and set but not golden; bottom is pale and firm
Tip: Preheating the stone is essential for a crispy crust—do not skip this step.
6
Add caramelized onion mixture
- Carefully remove the partially baked crust from the oven (using the peel).
- Spread the cooled caramelized onion and garlic mixture evenly over the crust, leaving a ½-inch border for the rim.
- Distribute the fresh mozzarella pieces evenly across the top, then sprinkle the grated Parmigiano-Reggiano over everything.
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Tip: Spread the onion mixture while it is still slightly warm so it adheres to the crust.
7
Bake until cheese melts and crust brownsOven 475°F / 245°C
- Return the pizza to the oven and bake for 10–12 minutes at 475°F (240°C) until the mozzarella is melted and bubbly, the Parmesan is golden, and the crust edges are deep golden brown.
- The bottom should be crisp and pale gold when you lift the edge (check with a peel if unsure).
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Ready when: Cheese is bubbling, crust rim is dark golden, and bottom is pale gold and crisp when lifted
Tip: If the edges brown too quickly before the cheese melts, loosely tent the pizza with foil for the last 2–3 minutes.
8
Rest and finish
- Transfer the hot pizza to a cutting board and let rest for 2–3 minutes.
- Just before serving, drizzle lightly with good-quality olive oil if desired.
- If using arugula, scatter a handful of fresh leaves over the top now—the residual heat will slightly wilt them and add a peppery note.
- Slice and serve immediately.
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Ready when: Cheese has set enough that slices hold their shape; crust is still warm
Tip: Add fresh arugula right before serving so it stays bright and doesn't wilt excessively.

Good to know

Tips

The key to this pizza is patient caramelization—rushing the onions by cranking the heat will burn them instead of sweetening them. Low and slow wins every time.
If you don't have a pizza stone, a preheated baking sheet works, but a stone produces a crispier, more evenly baked crust. Inexpensive stones are widely available and worth the investment.
For extra richness and depth, reserve 2 tablespoons of the caramelized onion liquid (after reducing the balsamic) and drizzle it onto the pizza just after it comes out of the oven.
If the crust puffs up with a large air bubble during the pre-bake, gently press it down with a wooden spoon or peel as soon as you see it forming.

Make ahead

The caramelized onion and garlic mixture can be made up to 2 days ahead and stored in an airtight container in the fridge. Reheat gently in a skillet over medium-low heat for 2–3 minutes before using. The pizza dough should be at room temperature before stretching, so remove it from the fridge 30 minutes before baking.

Storage & reheating

Store leftover pizza in an airtight container in the fridge for up to 3 days. Reheat on a preheated pizza stone at 350°F (175°C) for 8–10 minutes until the crust is crisp and the cheese is warm, or wrap a slice in a damp paper towel and microwave for 45–60 seconds. Do not freeze—the crust becomes tough when thawed.

Substitutions

fresh mozzarella → whole-milk mozzarella (low-moisture, shredded). Use 6 ounces / 170 g shredded mozzarella if you prefer a less creamy texture and longer melting. The pizza will be slightly less gooey but more evenly melted.
Parmigiano-Reggiano → aged Asiago or Pecorino Romano. Either cheese adds a similar nutty or tangy depth. Use the same amount and grate finely.
aged balsamic vinegar → red wine vinegar or sherry vinegar. Use only 1 tablespoon / 15 ml, as these are more acidic. The result will be slightly sharper and less sweet.
fresh thyme → fresh rosemary or dried oregano. Use ½ teaspoon dried oregano or 1 teaspoon fresh rosemary. Rosemary is bold; oregano is more subtle.