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Cheesy Spinach & Rice Stuffed Portobello Mushrooms, plated

Recipe · 35 min

Cheesy Spinach & Rice Stuffed Portobello Mushrooms

  • 35 min
  • 2–6 servings
  • 621 kcal / serving

A hearty, lightly creamy stuffing of spinach, rice and cheeses sits in roasted portobello caps, making a satisfying weeknight meal with a comforting texture. The greens, grains and dairy come together quickly for dinner on a busy evening.

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Baked · 35-minute dinner

Ingredients

  • 1 (5 oz) pkgbaby spinach
  • ½ cupbasmati rice
  • 8 fl ozchicken or vegetable broth
  • 2 clovesgarlic
  • ⅓ (8 oz) blockmozzarella cheese
  • 2 ozParmesan cheese
  • ⅔ cupplain Greek yogurt
  • 4 capsportobello mushrooms

From the pantry: black pepper, extra virgin olive oil, salt

Cookware

baking sheet pan · chef's knife · colander · cutting board · garlic press (optional) · grater · measuring cups · measuring spoons · nonstick skillet · oven mitts · small saucepan · stirring spoon

Kitchen help: cups to grams · tablespoons to cups · oven temperatures · butter conversions · what each cooking tool is for · ingredient substitutes

More dinner ideas: easy dinners · dinners for two

Shopping list by aisle

Produce

  • 1 (5 oz) pkgbaby spinach
  • 2 clovesgarlic
  • 4 capsportobello mushrooms

Dairy, eggs & chilled

  • ⅓ (8 oz) blockmozzarella cheese
  • 2 ozParmesan cheese
  • ⅔ cupplain Greek yogurt

Pantry & dry goods

  • ½ cupbasmati rice
  • 8 fl ozchicken or vegetable broth

3 aisles for this recipe. Plan a week in MealPot and it merges every dinner into one list in this order, scaled to your household.

Ingredients for 2, 4 and 6 servings

Ingredient2 servings4 servings6 servings
baby spinach1 (5 oz) pkg2 (5 oz) pkgs3 (5 oz) pkgs
basmati rice½ cup1 cup1 ½ cups
chicken or vegetable broth8 fl oz16 fl oz24 fl oz
garlic2 cloves4 cloves6 cloves
mozzarella cheese⅓ (8 oz) block⅔ (8 oz) block1 (8 oz) block
Parmesan cheese2 oz4 oz6 oz
plain Greek yogurt⅔ cup1 ⅓ cups2 cups
portobello mushrooms4 caps8 caps12 caps

Quantities in US units. Any other household size: MealPot scales the recipe and the grocery list for you.

Directions

  1. Preheat the oven to 375°F and set up a baking sheet.
  2. Rinse the rice under cold water, then transfer it to a small saucepan with the broth; bring to a boil over high heat.
  3. When boiling, stir, cover, reduce to low, and simmer until the liquid is absorbed, about 15–18 minutes.
  4. Gently wash and dry the mushrooms, remove stems, and scoop out the gills without piercing the cap; place them on the baking sheet and brush with a bit of oil.
  5. Peel and mince the garlic; set aside.
  6. Warm a large skillet over medium heat, add a splash of oil, and swirl to coat the bottom.
  7. Add the garlic to the skillet and cook briefly until fragrant, 15–30 seconds.
  8. Add the spinach to the skillet in small batches, letting each handful wilt before adding another.
  9. Finely grate the Parmesan and set aside; in the skillet, stir in the Parmesan, yogurt, salt and pepper until combined, then fold in the cooked rice.
  10. Fill each mushroom cap with an even amount of the rice mixture, place on the sheet, and bake for 10 minutes; then top with grated mozzarella and bake another 5 minutes until melted and lightly golden.
  11. Serve by dividing the stuffed mushrooms onto plates and enjoying.

Two tips

  • Make ahead: cook the rice and prep the mushroom filling up to the point of filling the caps, then refrigerate and bake when ready.
  • Serving idea: finish with a light drizzle of olive oil at the table or add a pinch more black pepper for a brighter finish.

Nutrition per serving

Calories
621 kcal
Protein
38 g
Carbs
53 g
Fat
29 g
Fiber
4 g
Sodium
379 mg

Estimates from the recipe's published nutrition data; they change with the version you pick above.

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Ingredient quantities, timing and nutrition follow the original Mealime recipe ↗ (captured 2026-09-12). The photo is MealPot's AI-rendered illustration of the finished dish; the description, directions, aisle list and serving table are MealPot's.

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