Perfect Caramelized Onion Risotto

If you’re craving comfort food with a touch of elegance, this Perfect Caramelized Onion Risotto is pure magic. Slowly caramelized onions develop deep, sweet flavor, perfectly blending with tender Arborio rice and warm, savory stock. Finished with butter, Parmesan, and mascarpone, each bite is creamy, luscious, and utterly satisfying. Ideal for cozy weeknight dinners, date nights, or impressing guests, this risotto feels fancy but uses simple ingredients you likely have on hand.

Why You’ll Love This Risotto

• Rich, sweet caramelized onions: Slow-cooked onions create a depth of flavor that makes the dish taste restaurant-quality.
• Creamy, comforting texture: Arborio rice, mascarpone, and Parmesan combine to produce that signature silky risotto consistency.
• Simple ingredients, big flavor: Pantry staples come together in a dish that tastes special and indulgent.
• Elegant yet easy: Perfect for entertaining or a cozy night in without complicated techniques.

Ingredients

For the Risotto

• 2 yellow onions, thinly sliced – caramelize slowly for sweet, golden flavor.
• 4 garlic cloves, minced – adds warmth and depth.
• 3 tbsp unsalted butter – base for caramelization and richness.
• 1 tbsp olive oil – prevents butter from burning during caramelization.
• 1 cup Arborio rice – short-grain rice essential for creamy risotto (Carnaroli also works).
• ½ cup dry white wine – adds subtle acidity and depth (optional; replace with stock if desired).
• 3 cups chicken stock, warm – creates a silky texture as it’s absorbed by the rice (vegetable stock works for vegetarian).
• 2 tbsp mascarpone cheese – enriches the risotto and adds creaminess.
• ⅓ cup grated Parmesan cheese – sharp, savory flavor.
• Kosher salt and freshly ground black pepper, to taste – balances flavors.
• Fresh thyme leaves, from 2 sprigs – for aroma and garnish.

For Serving

• Extra fresh thyme sprigs – for garnish

Equipment Needed

• Large skillet or braiser
• Wooden spoon or heat-resistant spatula
• Measuring cups and spoons
• Knife and cutting board

How to Make Perfect Caramelized Onion Risotto

Step 1: Caramelize the Onions

In a large skillet or braiser, heat butter and olive oil over medium-high heat. Add thinly sliced onions and stir. Reduce heat to medium and cook slowly for 25–35 minutes, stirring occasionally, until onions are soft, golden, and deeply caramelized. Season with salt and pepper. In the last 5 minutes, add minced garlic and thyme leaves, stirring to combine. Remove ¾ of the caramelized onions and set aside for later.

Step 2: Toast the Rice

In the same skillet with the remaining onions and fat, add Arborio rice. Stir constantly for about 1 minute over medium heat to lightly toast the rice and coat each grain with butter and onions.

Step 3: Deglaze and Cook the Risotto

Pour in the white wine and stir, allowing the rice to absorb it completely. Begin adding warm stock ½ cup at a time, stirring frequently and waiting for each addition to be absorbed before adding more. Continue this process until the rice is tender and creamy, about 25–30 minutes. Add water if necessary to fully cook the rice.

Step 4: Finish the Risotto

Reduce heat to low. Stir in reserved caramelized onions, grated Parmesan, and mascarpone cheese. Mix until fully combined and creamy. Taste and adjust seasoning with salt, pepper, and additional thyme if desired.

Step 5: Serve

Serve immediately, garnished with extra fresh thyme sprigs. For a complete meal, pair with grilled chicken, pan-seared salmon, roasted vegetables, or a fresh arugula salad with lemon vinaigrette.

Tips for Success

• Be patient with onions: Caramelize slowly for the richest flavor.
• Keep stock warm: Adding cold stock slows cooking and affects texture.
• Stir consistently: Helps release starch and achieve creamy consistency.
• Don’t overcook rice: Arborio should have a slight bite; it continues cooking after heat is removed.

Recipe Variations

• Vegetarian version: Use vegetable stock instead of chicken stock.
• Vegan version: Replace butter with olive oil and use vegan Parmesan and mascarpone alternatives.
• Extra flavor: Add sautéed mushrooms or roasted red peppers for added richness.
• Cheesy indulgence: Mix in a little Fontina or Gruyère for extra creaminess.

Storage Instructions

• Refrigerate: Store in an airtight container for up to 3 days. Leftover risotto can be made into crispy risotto cakes.
• Freeze: Freeze in individual portions for up to 2 months. Thaw completely before reheating.
• Reheat: Warm gently on the stove with a splash of stock or water, stirring often to restore creaminess.

Final Thoughts

This Perfect Caramelized Onion Risotto is comfort food elevated—creamy, flavorful, and sophisticated yet simple. With rich caramelized onions, tender rice, and velvety cheeses, it’s a dish that feels special but is surprisingly approachable. Whether for a cozy weeknight dinner or a date night at home, this risotto is sure to impress and satisfy every bite.

Print