Mushroom and Swiss Beef Burger

with truffle mayo and steak fries

$9.95 per serving

Prep & Cook Time: 25-35 min.

Cook Within: 5 days

Difficulty Level: Easy

Spice Level: Not Spicy

Contains: Milk, Eggs, Wheat, Soy

A note about serious food allergies

One word: truffles. These fungi, found underground, are prized for their rarity, rich flavor, and heady aroma. We celebrate these gems by starting with a juicy beef burger, crowned with creamy Swiss cheese, sautéed mushrooms, crisp onions and arugula, a hearty slice of tomato, and a truffle-spiked mayo that’s nothing short of addicting. Pair it with a side of homemade (by you!) steak fries for quite possibly the most unique and flavorful burger ever.

In Your Box (serves 2)

  • 2 Russet Potatoes
  • 1 Beefsteak Tomato
  • 3 oz. Cremini Mushrooms
  • 1 Red Onion
  • 2 Pretzel Buns
  • 10 oz. Ground Beef
  • 1½ oz. Swiss Cheese Slices
  • 1½ oz. Mayonnaise
  • ½ fl. oz. Truffle Oil
  • ½ oz. Baby Arugula
  • Nutrition (per serving)

  • Calories
    949
  • Carbohydrates
    82g
  • Fat
    48g
  • Protein
    50g
  • Sodium
    1163mg

Recipe Steps

You Will Need

  • Olive Oil
  • Salt
  • Pepper
  • Cooking Spray
  • 1 Baking Sheet
  • 1 Grill Pan or Outdoor Grill
  • 1 Medium Non-Stick Pan
  • 1 Small Bowl

Before You Cook

  • Mushroom and Swiss Beef Burger with truffle mayo and steak fries
    1

    Make the Steak Fries

    Cut potatoes lengthwise into ½" wedges. Place potatoes, 1 Tbsp. olive oil, ½ tsp. salt and ¼ tsp. pepper on prepared baking sheet and toss to evenly coat. Spread into a single layer and roast 12-15 minutes. Remove from oven, flip fries, and roast until fries are browned and crisp, 12-15 minutes. Remove from oven and set aside. While fries roast, prepare ingredients.

  • Mushroom and Swiss Beef Burger with truffle mayo and steak fries
    2

    Prepare the Ingredients

    Slice tomato into ¼" rounds. Cut mushrooms into ¼" slices. Peel onion and slice into thin rounds. Halve pretzel buns, if necessary.

  • Mushroom and Swiss Beef Burger with truffle mayo and steak fries
    3

    Cook the Burgers

    Warm a grill pan or outdoor grill to medium-high heat and lightly coat with cooking spray. Shape ground beef into two equal-sized patties slightly larger than pretzel bun diameter, and season each side with ½ tsp. salt and a pinch of pepper. Place patties on hot grill and cook until burgers reach a minimum internal temperature of 160 degrees, 4-6 minutes per side. When burgers are almost done, top with cheese and let melt slightly. Remove from grill.

  • Mushroom and Swiss Beef Burger with truffle mayo and steak fries
    4

    Cook the Mushrooms

    Place a medium non-stick pan over medium heat and add 1 tsp. olive oil. Place mushrooms in hot pan and cook, stirring occasionally, until soft, aromatic, and caramelized, 5-8 minutes. Remove from burner and set aside.

  • Mushroom and Swiss Beef Burger with truffle mayo and steak fries
    5

    Make the Truffle Mayo

    Combine mayonnaise and truffle oil (start with half, taste, and add more if desired) in a small bowl. Season with a pinch of salt and pepper and stir until fully incorporated.

  • Mushroom and Swiss Beef Burger with truffle mayo and steak fries
    6

    Plate the Dish

    If desired, lightly toast pretzel buns until warm. Spread truffle mayo on tops and bottoms of buns. Add burger patty, mushrooms, tomato and onion (to taste). Top with arugula and top bun. Arrange fries in a pile next to burger and serve any remaining truffle mayo on the side.