Gluten Free Smoky BBQ Portobello Mushroom Burger
Meaty, smoky, and deeply satisfying, this portobello burger is the kind of plant-based meal that genuinely earns a spot in the regular dinner rotation. The caps are marinated in a bold mix of gluten-free BBQ sauce, tamari, smoked paprika, and garlic powder, then grilled or pan-seared until they're caramelized, tender, and packed with flavor. Tamari does the heavy lifting that soy sauce usually would, keeping everything savory without any wheat in the mix — a small swap that makes a real difference. Brushing on that reserved marinade right at the end gives each cap a glossy, sticky finish that tastes like it came off a proper backyard grill. Toasting the gluten-free buns cut-side down in the same pan is a smart move that adds structure and a little crunch so nothing falls apart at first bite. Layered with crisp romaine, fresh tomato, and optional melted cheddar, this comes together in under an hour and serves four — no one at the table will feel like they're missing out on anything.
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Learn more →Ingredients
4 servings
For the mushrooms
- 4 large portobello mushroom caps, stems and gills removed
- ½ cup bbq sauce (gluten free)
- 2 tbsp olive oil
- 1 tbsp tamari
- 1 tsp smoked paprika
- ½ tsp garlic powder
- ½ tsp onion powder
- ¼ tsp black pepper
- ¼ tsp salt
For serving
- 4 gluten free burger buns, split
- 4 leaves romaine or green leaf lettuce
- 1 large tomato, sliced into 4 rounds
- ½ red onion, thinly sliced (optional)
- 4 slices cheddar cheese (optional)
Instructions
- 1
In a small bowl, whisk together the BBQ sauce, olive oil, tamari, smoked paprika, garlic powder, onion powder, salt, and black pepper until combined.
- 2
Place the portobello caps gill-side up in a shallow dish. Spoon about two-thirds of the marinade over the caps, turning to coat both sides. Reserve the remaining marinade in the bowl. Let the mushrooms marinate at room temperature for 30 minutes.
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