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Crispy Cheesy Mushroom Bites

Cheesy Mushrooms Appetizer Toasts

Mushroom appetizer toasts are cheesy, delicious, and easy to eat in just a bite or two! The perfect potluck appetizer to make everyone swoon! These mushroom snacks are made with a simple saute of mushrooms, baguette, and plenty of cheese for the perfect party snack.
Course Appetizer, brunch, lunch, Snack
Cuisine American
Keyword mushroom appetizer recipe, mushroom appetizer toasts, mushroom snacks
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings 6
Calories 215kcal


  • rimmed baking sheet


  • 3 tablespoons butter
  • 1 cup onion chopped
  • 2 cups mushrooms chopped
  • 1 cup mozzarella cheese shredded, plus a pinch extra for the top of each toast
  • ¼ cup parmesan cheese grated or shredded
  • 1 large egg
  • oregano
  • ¼ teaspoon salt
  • ½ teaspoon pepper
  • baguette sliced


  • Gather all your ingredients and preheat your oven to 350 degrees.
    Ingredients to make mushroom appetizer toasts.
  • Slice baguette into ¾ inch slices. Set aside.
    Baguette bread sliced on a cutting board with a bread knife.
  • In a large skillet melt your butter and add the mushrooms to the skillet.
    Mushrooms added to skillet.
  • Add onions and continue cooking until tender.
    Onions added to mushrooms in the skillet.
  • Add oregano, salt and pepper to the skillet.
    Seasonings added to the skillet of mushrooms.
  • Next, add mozzarella cheese and parmesan cheese.
    Cheese added to the skillet.
  • Add the egg and stir for a minute until totally blended.
    Egg added with cheeses to mushrooms in the skillet.
  • Remove the skillet from the heat.
    Mushroom topping cooked in a skillet.
  • Prepare rimmed baking sheet with parchment paper.
  • Place slices on baking sheet and add mushroom mixture on top of each slice. Add a pinch of shredded mozzarella cheese on top of each.
    Mushroom toasts assembled on a tray.
  • Drizzle with olive oil if desired.
  • Bake for between 12-15 minutes. The cheese should be melted and mushroom mixture heated through.
  • Serve up while warm and enjoy every bite!
    Wooden tray with mushroom appetizers toasts ready to eat.


  • Mushrooms: Cremini or brown mushrooms will bring more savory, mushroom flavor than white mushrooms.
  • The thickness of the bread: Be sure to cut the toast a bit on the thicker side so they don't get soggy from the mushrooms.
  • Liquid in the skillet: Most of the water should cook out of the mushrooms but if you still see liquid, drain it off before you add the remaining ingredients.


Calories: 215kcal | Carbohydrates: 25g | Protein: 12g | Fat: 8g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 1g | Cholesterol: 49mg | Sodium: 561mg | Potassium: 234mg | Fiber: 2g | Sugar: 4g | Vitamin A: 218IU | Vitamin C: 3mg | Calcium: 209mg | Iron: 2mg