Mushroom & Almond Cheese Stuffed Portobellos

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Hearty portobello mushrooms filled with a nutty cheese mixture and earthy mushrooms, baked until golden with a satisfying umami kick. This mediterranean-inspired keto (vegetarian) ready in about 40 minutes pairs large portobello mushrooms, mozzarella cheese, almond flour for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 2, 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.

★ 3.6 (9 ratings) Prep: 20 min Cook: 20 min Serves 2 Mediterranean cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Remove stems from portobello caps, scrape out gills, and place caps upside down on a baking sheet.
  2. Step 2: Finely chop 1/2 cup cremini mushrooms and 1 garlic clove, then sauté in 1 tbsp olive oil over medium heat for 4 minutes until golden and fragrant.
  3. Step 3: In a bowl, mix 1/4 cup mozzarella, 2 tbsp almond flour, 1/4 tsp sea salt, 1/8 tsp black pepper, and 1 tbsp chopped chives with the sautéed mushrooms.
  4. Step 4: Spoon mixture evenly into each portobello cap, pressing gently to fill.
  5. Step 5: Drizzle remaining 1 tbsp olive oil over the tops and bake for 20 minutes until cheese is bubbly and edges are golden.
  6. Step 6: Let rest for 5 minutes before serving to allow filling to set.

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Frequently asked questions

How long does Mushroom & Almond Cheese Stuffed Portobellos take to make?

Total time is about 40 minutes (20 min prep + 20 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 Mushroom & Almond Cheese Stuffed Portobellos?

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 Mushroom & Almond Cheese Stuffed Portobellos?

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 Mushroom & Almond Cheese Stuffed Portobellos for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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 Mushroom & Almond Cheese Stuffed Portobellos vegetarian?

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

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