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Stuffed Cheesy Portobello Burgers

Recipe courtesy Kelsey Nixon

Photo: Stuffed Cheesy Portobello Burgers

TOTAL TIME: 1 hr 50 min
Prep: 30 min
Inactive Prep: --
Cook: 1 hr 20 min
 
YIELD: 4 servings
LEVEL: Easy

ingredients

  • 2 tablespoons butter
  • 2 Vidalia onions, thinly sliced
  • 4 large portobello mushrooms, stems removed and caps cleaned
  • Olive oil, for brushing
  • Kosher salt and freshly cracked black pepper
  • 1 tablespoon brown sugar
  • 1 teaspoon balsamic vinegar
  • 1/2 cup shredded sharp white Cheddar
  • 1/2 cup shredded Swiss
  • 4 kaiser rolls, split, buttered and toasted
  • 4 slices tomato
  • 1 cup baby arugula
  • Roasted Garlic Aioli, recipe follows
ROASTED GARLIC AIOLI:
  • 1 head garlic
  • 1 tablespoon olive oil
  • Kosher salt and freshly cracked black pepper
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Directions

In a large skillet, melt the butter over medium heat. Add the onions and cook just until translucent, about 5 minutes. Add the brown sugar and balsamic vinegar, cover and continue cooking, stirring occasionally, until the onions are caramelized, 20 to 25 minutes.

Meanwhile, heat a grill, grill pan or cast-iron skillet over medium-high heat. Brush the tops of the portobello mushrooms with olive oil and season liberally with salt and pepper. Cook the mushrooms, stem side down, 5 to 7 minutes. Flip and continue cooking another 5 minutes. Remove to a work surface.

Fold the shredded cheeses into the caramelized onions just before building the burger. Carefully spoon the caramelized onions and melted cheese into the mushroom caps.

Build the burger by placing each stuffed mushroom on the bun bottoms. Top with the tomatoes and arugula. Smear the top buns with the Roasted Garlic Aioli and place on top of the other ingredients. Serve immediately.

Wine suggestion for this recipe:
Chardonnay

Preheat the oven to 400 degrees F.

Slice off the top of the garlic head. Drizzle the cut side with the olive oil and sprinkle with salt and pepper. Wrap in foil and bake until tender and fragrant, 35 to 40 minutes. Allow to cool.

Remove the garlic cloves from their skins and add to a food processor along with the mayonnaise, lemon juice and a pinch of salt and pepper. Pulse until pureed. Season and store in an airtight container in the refrigerator until ready to use.

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