Charcoal-Grilled Portobello Mushrooms with Balsamic Glaze

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Meaty portobello mushrooms grilled over charcoal and finished with a tangy balsamic glaze for a rich, umami-packed vegetarian main. This grilling (vegetarian) ready in about 30 minutes pairs large portobello mushroom caps, olive oil, balsamic vinegar for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 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.

Prep: 15 min Cook: 15 min Serves 4 180 cal/serving
Plan a meal with the AI → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Instructions

  1. Step 1: In a small saucepan, combine 1/3 cup balsamic vinegar and 1 tbsp brown sugar. Bring to a simmer over medium heat and cook for 8-10 minutes, stirring occasionally, until the mixture thickens to a syrupy consistency. Remove from heat and set aside.
  2. Step 2: Clean 4 large portobello mushroom caps and remove stems. Brush both sides generously with 4 tbsp olive oil, then sprinkle 1 tsp salt, 1/2 tsp black pepper, and 1 tsp fresh thyme leaves evenly over them.
  3. Step 3: Preheat charcoal grill to medium heat with hot embers and grill the mushrooms gill side down for 5 minutes. Flip and grill for another 4-5 minutes until tender and smoky.
  4. Step 4: Remove mushrooms from grill and brush with the prepared balsamic glaze on both sides. Let rest for 3 minutes before serving.

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Cookware & pots → Shop all kitchen tools →

Frequently asked questions

How long does Charcoal-Grilled Portobello Mushrooms with Balsamic Glaze take to make?

Total time is about 30 minutes (15 min prep + 15 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 Charcoal-Grilled Portobello Mushrooms with Balsamic Glaze?

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 olive oil from drying out.

Can I substitute ingredients in Charcoal-Grilled Portobello Mushrooms with Balsamic Glaze?

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 Charcoal-Grilled Portobello Mushrooms with Balsamic Glaze 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 Charcoal-Grilled Portobello Mushrooms with Balsamic Glaze 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.

Related recipes