Portobello Steak Burger with Caramelized Onions

Name: Portobello Steak Burger with Caramelized Onions
Prep time: 45 min
Cook time: 45 min
Total time: 45 min
Yield: 6
Cuisine: American
Ingredients: 237 milliliters balsamic vinegar; 6 curly leaf lettuce leaves; 1 teaspoon dried basil; 2 garlic cloves, minced; 0 teaspoons ground white pepper; 340 grams whole-wheat Kaiser rolls or hamburger buns; 0 teaspoons kosher salt; 59 milliliters low-fat mayonnaise; 1 Tbsp olive oil; 2 Tbsps olive oil; 355 milliliters sliced onion; 680 grams portobello mushroom caps (about; 1 teaspoon bottled minced roasted garlic; 6 larges (1/4-inch-thick) slices tomato

Portobello Steak Burger with Caramelized Onions might be just the American recipe you are searching for. One serving contains 348 calories, 10g of protein, and 12g of fat. This recipe covers 22% of your daily requirements of vitamins and minerals. This recipe serves 6. It will be a hit at your valentin day event. It is a good option if you're following a dairy free and vegetarian diet. From preparation to the plate, this recipe takes approximately 45 minutes. If you have tomato, olive oil, basil, and a few other ingredients on hand, you can make it.

Instructions

Combine first 6 ingredients in a large zip-top plastic bag.

Equipment you will use

Ziploc Bags

Add mushroom caps; seal and marinate in refrigerator 24 hours.

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Mushrooms

Prepare grill or broiler.

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Broiler

Grill

Remove mushroom caps from bag, discarding marinade.

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Marinade

Mushrooms

Place mushroom caps on grill rack or broiler pan coated with cooking spray; cook 5 minutes or until tender.

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Cooking Spray

Mushrooms

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Broiler Pan

Grill

Heat the oil in a medium nonstick skillet over medium-high heat.

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Cooking Oil

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Frying Pan

Add onion; cover and cook 10 minutes or until golden brown, stirring frequently.

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Onion

Combine mayonnaise and roasted garlic in a small bowl.

Ingredients you will need

Roasted Garlic

Mayonnaise

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Bowl

Spread 1/2 tablespoon mayonnaise mixture evenly over the top halves of buns; top each bottom half of bun with 1 lettuce leaf, 1 tomato slice, 1 mushroom cap, 1 tablespoon caramelized onion, and top half of bun.

Ingredients you will need

Caramelized Onions

Lettuce Leaf