Crusted Portabella Burgers

Notes: Buy portabella mushroom caps. Or buy whole mushrooms, and trim off stems and save them for other uses.

Yield: Makes 4 servings
Recipe from Sunset

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Nutritional Information

Amount per serving
  • Calories: 419
  • Calories from fat: 20%
  • Protein: 16g
  • Fat: 9.4g
  • Saturated fat: 1.6g
  • Carbohydrate: 68g
  • Fiber: 5.2g
  • Sodium: 695mg
  • Cholesterol: 4.5mg


  • 2 large egg whites
  • 1 tablespoon olive oil
  • 1/3 cup Italian-style fine dried bread crumbs
  • 2 tablespoons chili powder
  • 4 portabella mushroom caps (5 in. wide; 1 to 1 1/4 lb. total)
  • 4 round sandwich buns (4 in. wide; 3/4 lb. total)
  • 1 cup nonfat sour cream
  • 2 teaspoons minced canned chipotle chilies or hot sauce
  • 1/4 cup thinly sliced red onion
  • 1 cup spinach leaves, rinsed and crisped
  • Salt
  • Pepper


  1. 1. In a bowl, beat egg whites and oil to blend. In another bowl, mix crumbs and chili powder.
  2. 2. Rinse mushroom caps; drain. Coat each cap with egg mixture, drain briefly, then coat with crumbs, shaking off excess. Set caps, gill sides down, slightly apart on a 12- by 15-inch baking sheet. Lay bun halves, cut sides up, side by side on another 12- by 15-inch baking sheet.
  3. 3. Bake mushroom caps in a 450° oven until browned and flexible when pressed, about 20 minutes. About 3 minutes before mushrooms are done, add buns to oven; bake until lightly toasted.
  4. 4. In a small bowl, mix sour cream and chipotle chilies. Spread mixture on cut sides of buns. Layer equal amounts of onion and spinach on each bun bottom, top with a mushroom cap, add salt and pepper to taste, and cover with bun top.
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