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Amberly Vahn

Delicious Roasted Mushroom Sandwich with Horseradish Aioli

This Roasted Mushroom Sandwich with Horseradish Aioli is a delightful, hearty meal perfect for fall gatherings, combining rich flavors and fresh ingredients.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 4 sandwiches
Course: Main Course
Cuisine: American
Calories: 400
Ingredients Equipment Method Notes

Ingredients
  

Group: Ingredients
  • 1 pound cremini or shiitake mushrooms, cleaned and sliced
  • 2 Tbsp. high-quality extra virgin olive oil
  • 3 cloves garlic, minced
  • 1 handful fresh thyme leaves, stripped from the stems
  • to taste salt and pepper
  • 4 slices crusty sourdough or your favorite bakery bread
  • ½ cup mayonnaise
  • 1 Tbsp. prepared horseradish, adjust to taste
  • 1 tsp. lemon juice
  • a pinch salt

Equipment

  • Oven
  • Baking sheet
  • Mixing bowl
  • Skillet

Method
 

  1. Preheat your oven to 400°F (200°C).
  2. In a large mixing bowl, toss the sliced mushrooms with olive oil, minced garlic, thyme, salt, and pepper. Spread them out on a baking sheet lined with parchment paper and roast for about 20-25 minutes until golden-brown and tender.
  3. While the mushrooms are roasting, combine the mayonnaise, horseradish, lemon juice, and salt in a small bowl. Whisk until smooth.
  4. Slice your sourdough bread and lightly toast each piece until golden and crispy.
  5. Spread a generous layer of horseradish aioli on one side of each slice of bread. Pile on the roasted mushrooms and top with another slice of bread.
  6. For an extra crunch, grill the assembled sandwich in the skillet for about 2 minutes on each side until the bread is crispy.

Notes

Ensure everything is warm before serving, as the warm, roasted mushrooms mix beautifully with that creamy horseradish aioli.