Savory Beef & Blue Cheese Stuffed Portobello Mushrooms
A protein-packed keto appetizer featuring meaty portobellos filled with herb-infused ground beef and tangy blue cheese, perfect for bodybuilding meal prep. This mediterranean-inspired beef (keto, high protein) ready in about 35 minutes pairs large portobello mushrooms, ground beef, blue cheese crumbles for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 452 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.
Ingredients
- 4 large portobello mushrooms
- 12 oz ground beef
- 1/4 cup blue cheese crumbles
- 2 tbsp olive oil
- 3 cloves, minced garlic
- 1/2 tsp dried thyme
- 1 tbsp Dijon mustard
- 1/4 tsp salt
- 1/4 tsp black pepper
Instructions
- Step 1: Preheat oven to 400°F (200°C). Remove stems from mushrooms and brush cut sides with 1 tbsp olive oil. Place gill-side up on a parchment-lined baking sheet and season with 1/8 tsp salt and 1/8 tsp pepper.
- Step 2: Heat remaining 1 tbsp olive oil in a skillet over medium-high heat. Add minced garlic and sauté for 1 minute until fragrant, then add ground beef, breaking it into small pieces. Cook for 5-6 minutes until no longer pink, stirring occasionally.
- Step 3: Stir in thyme, Dijon mustard, remaining salt, and pepper. Remove from heat and fold in 2 tbsp blue cheese crumbles until partially melted. Spoon mixture into mushroom caps, topping with remaining cheese crumbles.
- Step 4: Bake for 18-20 minutes until mushrooms are tender and edges are golden brown, checking at 15 minutes to prevent burning.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Savory Beef & Blue Cheese Stuffed Portobello Mushrooms take to make?
Total time is about 35 minutes (15 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 Savory Beef & Blue Cheese Stuffed Portobello Mushrooms?
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 Savory Beef & Blue Cheese Stuffed Portobello Mushrooms?
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 Savory Beef & Blue Cheese Stuffed Portobello Mushrooms 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 Savory Beef & Blue Cheese Stuffed Portobello Mushrooms keto?
Yes — this recipe is tagged keto, high protein, gluten free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Added this to my weekly meal rotation. So satisfying.
- ★★★★★
Used half the salt and it was still plenty flavorful.
- ★★★★☆
Tasty recipe. I'd add a bit more seasoning next time.
