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Grilled Portabellas with Caramelized Onions and Avocados

By: Chileanavocados.org

"Big, meaty portabella mushrooms team nicely with cool and creamy avocado slices and rings of slow-cooked red onions. Cook the mushrooms on a grill, or broil them. You get lots of great flavor, but a lot fewer calories, than a regular burger."

Rate/Review | Read Reviews (12)

Prep Time:
15 Min

Cook Time:
15 Min

Ready In:
30 Min

Servings (Help)

US Metric Calculate

Original Recipe Yield 4 servings

Ingredients

4 large portabella mushrooms, stems removed
1 medium red onion, peeled and sliced thin
1 tablespoon olive oil
1/2 teaspoon salt and pepper
1 Chilean Hass avocado
4 large hamburger buns

Directions

Broil or grill mushrooms on both sides until just tender, about 5 minutes per side. Sprinkle with salt and pepper.
Cook onions in olive oil over medium heat until very tender, stirring occasionally, about 10 to 12 minutes.
Cut avocado in half, remove the pit, and peel and cut into slices.
Toast buns. Top bun bottom with grilled portabella, 1/4 of the onion and avocado slices. Top with bun top.