
By using plant-based butter and plant-based mayonnaise, we made this delicious appetizer suitable for our guests who are dairy-free or plant-based without sacrificing any flavor. I chose a wild mushroom selection when I made it, but other mushrooms should work equally as well, although not portobello as they are too hearty for this recipe.

The mushroom sauce can be made a day ahead of time to save time for the day of your dinner.
Looking for a mushroom appetizer, but maybe not this one? Consider these:

Wild Mushroom Crostini
Ingredients
Mushrooms
- 3 Tbsp butter
- 12 oz assorted wild mushrooms shitke, oyster, crimini, black trumpet
- 1 ½ tsp fresh thyme chopped
Thyme Vinaigrette
- ¼ cup red wine vinegar
- 3 Tbsp fresh thyme leaves
- 2 Tbsp mayonnaise
- 1 small shallot chopped
- ½ cup olive oil plus more for brushing
- 1 baguette sliced diagonally
Instructions
Mushrooms
- Clean and slice mushrooms. Melt butter in large skillet over medium-high heat. Add mushrooms and thyme. Sauté until mushrooms are browned, about 8 min. Season with salt and pepper. Can be made 1 day ahead. Cover, chill. Rewarm before using.
Thyme Vinaigrette
- Blend first 4 ingredients in blender 10 seconds. With machine running, gradually add 1/2 cup olive oil; blend until almost smooth. Season to taste with salt and pepper.
Assemble
- Preheat oven to 400°F. Arrange bread slices on rimmed baking sheet. Brush with oil. Bake until beginning to crisp, about 8 minutes.
- Mound a spoon of mushrooms on each slice. Drizzle each with thyme vinaigrette.