“I found this on RecipeGirl.com. She says these are so meaty and juicy, you'd swear they were made with beef. I haven't tried this yet but will when I buy more portobello's.”
READY IN:
30mins
SERVES:
4
YIELD:
4 burgers
UNITS:
US

Ingredients Nutrition

Directions

  1. Heat olive oil in 12" skillet over moderately high heat for 1 minute. Add chopped onion and garlic and saute, stirring occasionally, until limp and golden- about 3 minutes.
  2. Add mushrooms and saute, stirring now and then, until mushrooms soften and brown- about 4 minutes. Transfer mushroom mixture to a large bowl and cool 10 minutes.
  3. Using wooden spoon, mix salt, pepper and bread crumbs into mushroom mixture. Add egg whites and mix thoroughly.
  4. Scoop up mixture by 1/2-cup measure, then using hands, shape into 4 patties about 3/4" thick.
  5. Wipe out skillet, spray with nonstick spray, and set over moderate heat. Add patties and brown about 3 minutes on each side.
  6. Serve on buns and add desired condiments.

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