Mushroom Melt with Dill Aioli

Details

Ingredients

• 1 garlic clove, chopped
• 1 teaspoon lemon juice
• 1 egg yolk
• ¼ cup olive oil
• 1 teaspoon dried dill weed
• ½ teaspoon salt
• cayenne pepper, to taste
• 2 tablespoons butter
• 2 slices whole wheat bread
• 4 thick slices Cheddar cheese
• 2 large mushrooms, chopped
• 1 cup fresh baby spinach