Caramelized Onion and Manchego Flatbread with Rosemary

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Thin flatbread topped with sweet caramelized onions, nutty Manchego cheese, and fragrant fresh rosemary for a savory appetizer or light meal. This spanish-inspired pizza ready in about 45 minutes pairs prepared pizza dough, medium, thinly sliced yellow onions, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 30 min Serves 4 Spanish cuisine 480 cal/serving
Plan a meal with the AI → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Instructions

  1. Step 1: Heat 3 tbsp olive oil in a large skillet over medium-low heat. Add 2 thinly sliced medium yellow onions and 1 tsp granulated sugar; cook slowly for 25-30 minutes, stirring occasionally until onions are deeply golden and caramelized.
  2. Step 2: Preheat oven to 475°F. Roll out 1 lb prepared pizza dough on a floured surface to a 12x14-inch rectangle and transfer to a parchment-lined baking sheet.
  3. Step 3: Spread the caramelized onions evenly over the dough, then scatter 6 oz thinly sliced Manchego cheese and 1 tbsp chopped fresh rosemary. Season with 1/2 tsp salt and 1/4 tsp black pepper.
  4. Step 4: Bake for 12-15 minutes until the crust is golden and cheese melts with some bubbling. Remove from oven, let cool slightly, slice, and serve warm.

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Bakeware & baking tools → Shop all kitchen tools →

Frequently asked questions

How long does Caramelized Onion and Manchego Flatbread with Rosemary take to make?

Total time is about 45 minutes (15 min prep + 30 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Caramelized Onion and Manchego Flatbread with Rosemary?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep prepared pizza dough from drying out.

Can I substitute ingredients in Caramelized Onion and Manchego Flatbread with Rosemary?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Caramelized Onion and Manchego Flatbread with Rosemary for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Caramelized Onion and Manchego Flatbread with Rosemary?

Spanish pizza like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

Related recipes