Three-Cheese Stuffed Portobello Mushroom Caps

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Hearty mushroom caps filled with melted Gruyère, goat cheese, and herbs, baked until bubbly. This french-inspired vegetarian (low carb) ready in about 40 minutes pairs large portobello mushrooms, shredded Gruyère cheese, crumbled goat cheese for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 220 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.

★ 4.3 (9 ratings) Prep: 15 min Cook: 25 min Serves 4 French cuisine 220 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Remove mushroom stems and scrape out gills with a spoon. Brush mushroom caps with 1 tbsp olive oil, then season with 1/4 tsp salt and 1/8 tsp black pepper. Place caps on a baking sheet and roast for 10 minutes to soften.
  2. Step 2: While mushrooms roast, mix 1/2 cup shredded Gruyère, 1/4 cup crumbled goat cheese, 1 tbsp chopped thyme, 2 minced garlic cloves, and 1 tsp balsamic vinegar in a bowl. Remove mushrooms from oven, fill each cap with cheese mixture, and sprinkle with an extra pinch of salt.
  3. Step 3: Bake for 15-18 minutes until cheese is golden and bubbly, and mushroom edges are slightly crisp. Let rest for 5 minutes before serving to set the filling.

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Frequently asked questions

How long does Three-Cheese Stuffed Portobello Mushroom Caps take to make?

Total time is about 40 minutes (15 min prep + 25 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 Three-Cheese Stuffed Portobello Mushroom Caps?

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 large portobello mushrooms from drying out.

Can I substitute ingredients in Three-Cheese Stuffed Portobello Mushroom Caps?

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 Three-Cheese Stuffed Portobello Mushroom Caps 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.

Is Three-Cheese Stuffed Portobello Mushroom Caps low carb?

Yes — this recipe is tagged low carb based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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