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5.0 from 3 votes

Vegetarian Sliders with Fry Sauce

Meatless comfort food at its finest! The filling features a caramelized Vidalia onion, baby portobello mushrooms, and pickles.

Prep Time
10 mins
Cook Time
10 mins
Total Time
30 mins
Servings: 6
Calories: 541 kcal
Course: Appetizer
Cuisine: American

Ingredients

Sliders
  • 1 medium sweet Vidalia onion or yellow onion peeled and sliced
  • 2 to 3 tablespoons olive oil divided
  • 4 ounces sliced baby portobello mushrooms
  • 1 cup diced Vlasic Farmer’s Garden Bread and Butter Chip pickles
  • 1 teaspoon pickle juice
  • 6 slider buns or Hawaiian rolls
Fry Sauce
  • ½ cup ketchup
  • ¼ cup mayo or Miracle Whip, use vegan mayo to keep vegan
  • about 3 teaspoons pickle juice or to taste
  • pinch onion powder optional and to taste

Instructions

Filling:
    Cup of Yum
  1. Heat a non-stick skillet over medium-high heat, add the onion, drizzle with about 1 tablespoon oil, and allow onion to caramelize, stirring every couple of minutes, or as needed. It takes about 10 minutes for my onions to caramelize and I cook them covered to save time. Lower the heat if onion is browning too fast.
  2. After onion has caramelized, add the mushrooms, pickles, pickle juice, 1 to 2 tablespoons oil or as necessary, and allow mixture  to cook for about 10 minutes, stirring every couple of minutes, or as needed. I cook covered to save time. After about 10 minutes, or after vegetables have softened and wilted, turn off the heat; set aside.
  3. While vegetables are cooking, make the fry sauce.
Fry Sauce:
  1. In a medium bowl, combine all ingredients and whisk until smooth.
  2. Generously spread fry sauce on both sides of slider buns.
  3. Fill each bun generously with the onion mixture and serve.

Notes

  • Storage: Sliders are best warm and fresh although extra filling will keep airtight in the fridge for up to 3 days. Extra fry sauce will keep airtight in the fridge for up to 1 month.

Nutrition Information

Serving 1 Calories 541kcal (27%) Carbohydrates 30g (10%) Protein 6g (12%) Fat 46g (71%) Saturated Fat 22g (110%) Polyunsaturated Fat 21g Trans Fat 1g Cholesterol 85mg (28%) Sodium 797mg (33%) Fiber 3g (12%) Sugar 11g (22%)

Nutrition Facts

Serving: 6Serving

Amount Per Serving

Calories 541

% Daily Value*

Serving 1
Calories 541kcal 27%
Carbohydrates 30g 10%
Protein 6g 12%
Fat 46g 71%
Saturated Fat 22g 110%
Polyunsaturated Fat 21g 124%
Trans Fat 1g 50%
Cholesterol 85mg 28%
Sodium 797mg 33%
Fiber 3g 12%
Sugar 11g 22%

* Percent Daily Values are based on a 2,000 calorie diet.