You are here: Home » Recipes » Avocado-Stuffed Marinated Mushrooms Avocado-Stuffed Marinated Mushrooms Kitchen Tested Yield 8 servings Prep 10 mins Cook 0 mins Creamy avocado filling, with zip from feta and lemon. Hass Avocado Board PrintEmail Ingredients 2 (8-ounce) packages fresh white button mushrooms2/3 cup bottled balsamic dressing2 ripe, firm large avocados (about 8-ounces each)1 tablespoon fresh lemon juice1 teaspoon garlic salt1 green onion, finely chopped1/2 cup crumbled feta cheese Instructions Using a damp paper towel, wipe all mushrooms to remove any soil. Remove mushroom steams; discard. Place mushroom caps in a plastic zip-top bag and add salad dressing. Turn to coat mushrooms well. Marinate 30 minutes. Remove mushrooms from dressing. Cut avocados in half, remove seed and scoop our flesh. Combine avocado with lemon juice, garlic salt and onion. Mash mixture with a fork, combining all ingredients. Spoon avocado mixture into each mushroom cap and sprinkle with feta cheese. Recipe courtesy of the Haas Avocado Board.