Low-Heat Caramelized Onion and Mushroom Risotto

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

A creamy risotto made with onions and mushrooms slowly cooked at low heat to develop rich, sweet flavors without scorching. This italian-inspired pasta ready in about 50 minutes pairs Arborio rice, medium Onion, Mushrooms for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 360 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: 20 min Cook: 30 min Serves 4 Italian cuisine 360 cal/serving
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Ingredients

Instructions

  1. Step 1: Finely chop 1 medium onion and 1 cup sliced mushrooms. Mince 2 garlic cloves. In a large saucepan, melt 2 tablespoons butter over low heat, then add onion and mushrooms. Cook uncovered for 15 minutes, stirring occasionally, until deeply golden and softened.
  2. Step 2: Add minced garlic and cook for 1 minute until fragrant. Stir in 1 cup Arborio rice, coating grains with butter, then pour in 1/2 cup dry white wine.
  3. Step 3: Cook, stirring constantly, until wine evaporates (about 2 minutes). Add 4 cups chicken broth, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Reduce heat to low, cover, and simmer for 20 minutes, stirring every 5 minutes to prevent sticking.
  4. Step 4: Stir in 1/2 cup grated Parmesan cheese. Cook uncovered for 3 minutes until rice is tender and creamy, adding splashes of broth if too thick.

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Frequently asked questions

How long does Low-Heat Caramelized Onion and Mushroom Risotto take to make?

Total time is about 50 minutes (20 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 Low-Heat Caramelized Onion and Mushroom Risotto?

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 arborio rice from drying out.

Can I substitute ingredients in Low-Heat Caramelized Onion and Mushroom Risotto?

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 Low-Heat Caramelized Onion and Mushroom Risotto 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 Low-Heat Caramelized Onion and Mushroom Risotto?

Italian pasta 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.

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