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Home / Learn / Turkey and Spinach Stuffed Portobello Mushrooms

Turkey and Spinach Stuffed Portobello Mushrooms

Pasindu Wanniarachchi Β· 1 min read Β· Updated September 3, 2026

These stuffed portobello mushrooms are a robust, low-carb dinner option that genuinely delivers on protein, packing around 38g per serving from lean ground turkey. Combined with a savory, nutrient-dense spinach and herb filling, these mushrooms feel far more substantial and satisfying than a typical “lighter” meal. The large portobello caps serve as a natural, earthy vessel, eliminating the need for bread or pastry and keeping net carbs exceptionally low without relying on artificial substitution tricks.

From a practical standpoint, this recipe takes only about 35 minutes from prep to table. Furthermore, the baked caps hold up remarkably well in the refrigerator, making them an excellent choice for weekly meal prep. Lean turkey provides high-quality amino acids essential for muscle recovery, while portobello mushrooms offer a rich source of B vitamins, copper, and dietary fiber, striking an ideal balance between deep flavor and metabolic efficiency.

Meal Prep & Storage Tips

  • Refrigeration: Store the cooked, stuffed mushrooms in an airtight container in the fridge for up to 3 to 4 days. Because portobellos release moisture as they cool, placing a paper towel at the bottom of the container can help absorb excess condensation and prevent the mushrooms from becoming soggy.
  • Reheating: Rewarm thoroughly in a toaster oven or conventional oven at 180Β°C for about 10 to 12 minutes to restore the texture of the mushroom caps and melt the savory filling back to perfection. Microwave reheating is faster, but it tends to soften the mushrooms further.
  • Freezing: While you can freeze stuffed portobellos for up to 2 months, the high water content of the mushrooms changes their texture slightly upon thawing, making them softer. For the best culinary results, prep and bake them fresh or enjoy them entirely from refrigerated storage.
⏱️
10 minPrep Time
πŸ”₯
25 minCook Time
🍽️
4Servings
πŸ“Š
EasyDifficulty

Nutrition Per Serving

310Calories
38gProtein
8gCarbs
14gFat

Ingredients

  • 4 large portobello mushroom caps, stems removed and gills scraped out
  • 500g lean ground turkey (93% lean)
  • 120g fresh baby spinach, roughly chopped
  • 3 cloves garlic, minced
  • Β½ medium yellow onion, finely diced
  • 1 tbsp olive oil
  • 1 tsp dried oregano
  • Β½ tsp smoked paprika
  • Β½ tsp salt
  • ΒΌ tsp black pepper
  • 60g part-skim mozzarella, shredded
  • 2 tbsp grated Parmesan
  • 1 tbsp tomato paste
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Instructions

  1. Preheat your oven to 200Β°C (400Β°F) and line a baking sheet with parchment paper.
  2. Brush both sides of each portobello cap lightly with olive oil, place them gill-side up on the baking sheet, and roast for 8 minutes to release excess moisture. Remove from the oven and pat dry with paper towels.
  3. While the mushrooms pre-roast, heat the olive oil in a large skillet over medium-high heat. Add the diced onion and cook for 3 minutes until softened.
  4. Add the minced garlic and cook for 30 seconds until fragrant, then add the ground turkey. Break it apart and cook for 5–6 minutes until fully browned with no pink remaining.
  5. Stir in the tomato paste, oregano, smoked paprika, salt, and pepper, then add the chopped spinach. Cook for 2 minutes, stirring, until the spinach is fully wilted and any excess liquid has evaporated.
  6. Divide the turkey and spinach filling evenly among the four mushroom caps, pressing it gently to mound it slightly.
  7. Combine the shredded mozzarella and Parmesan, then sprinkle the cheese mixture evenly over each stuffed cap.
  8. Return the baking sheet to the oven and bake for 10–12 minutes until the cheese is melted and golden at the edges. Serve immediately.

Kitchen Gear for Turkey and Spinach Stuffed Portobello Mushrooms

ProductBest ForRatingPrice
Glass Meal Prep Set (5-pack)
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Glass Meal Prep Set (5-pack)
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Pasindu Wanniarachchi

Pasindu Wanniarachchi is a senior web developer with over a decade of experience building digital platforms. As the creator of Nutrients Calculator, he combines his full-stack technical expertise with a focus on developing accessible, AI-powered health and nutrition tools.