The Best Grilled Portobello Mushroom Burger
I set out to make a great tasting grilled portobello mushroom burger that even a meat lover would love. The mushrooms are marinated then grilled and topped with melted Swiss Cheese, grilled red onion, tomatoes, spinach, and avocado – yum!!
Ingredients
4 servings
Instructions
- In a large bowl, whisk together vinegar, soy sauce, oil, rosemary, and Montreal steak seasoning.
- Place the mushroom caps in the bowl and toss with sauce, using a spoon to evenly coat. Let stand at room temperature for 20 to 30 minutes, turning a few times.
- Heat the grill or indoor grill pan over medium heat. When hot, brush the grate with oil or lightly spray the grill pan.
- Place the mushrooms on the grill, reserving marinade for basting. Grill for 5 to 7 minutes on each side, or until tender, brushing with marinade frequently.
- Top the mushrooms with cheese during the last minute of cooking.
- While the mushrooms cook, grill the onions about 1 minute on each side and grill the buns until toasted.
- To finish, place the spinach and grilled portobello mushrooms on the buns and top with the grilled onions, sliced tomato and avocado.
Nutrition per serving
295kcal
💰 Cost Estimate
Total Ingredients
$1761.00
$1761.00
Per Serving
$440.00/serving
$440.00/serving
🏠 Savings
~$3522.00 vs buying!
~$3522.00 vs buying!
📋 Price Breakdown (83% ingredients detected)
| Ingredient | Amount | Subtotal |
|---|---|---|
| portobello mushroom caps | 4 | $393.00 |
| balsamic vinegar | 2 tbsp | $28.00 |
| low sodium soy sauce | 1 tbsp | $15.00 |
| olive oil | 1 tbsp | $21.00 |
| chopped rosemary | 1 tbsp | - |
| -1/2 tsp steak seasoning like Montreal Steak Grill Mates | 1 | $286.00 |
| thick slices red onion | 4 | $278.00 |
| reduced fat Swiss | 4 oz | $294.00 |
| thin slices tomato | 4 | $211.00 |
| avocado | 0.5 | $37.00 |
| baby spinach | - | - |
| wheat low calorie buns | 4 whole | $198.00 |
*Estimated market prices, may vary by region
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