Foryoueats: Roasted Mushroom Sandwich with Horseradish Aioli

Ingredients

• Roasted Mushrooms:
• 16 ounces sliced mushrooms (portobello or white button mushrooms)
• 2 tablespoons avocado oil
• 2 tablespoons Cajun seasoning (if it has salt in it, you may want to add less of it just to make sure the mushrooms don’t get too salty – every brand is different)
• salt and pepper to taste
• Horseradish Aioli:
• 1/2 cup mayo
• 1 small clove garlic, grated (even half a clove is plenty)
• 1–2 teaspoons horseradish sauce, to taste (I use Boar’s Head)
• 1–2 teaspoons lemon juice, to taste
• salt, to taste
• Sandwiches:
• Big honking chunk of bread that you really love (I like Trader Joe’s caramelized onion focaccia for this)
• Pesto rosso (optional as a second sauce)
• Havarti cheese slices
• Arugula tossed with olive oil and lemon