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Caramelized Onion & Mushroom Crostini


  • Author: chefcletus
  • Total Time: 55 minutes
  • Yield: 4 servings 1x
  • Diet: Vegetarian

Description

A warm and inviting appetizer featuring sweet caramelized onions and robust mushrooms on toasted bread, perfect for gatherings and simple enough for weeknight snacks.


Ingredients

Scale
  • Baguette or ciabatta
  • 2 large yellow onions
  • 8 oz cremini, shiitake, or portobello mushrooms
  • 2 tbsp olive oil
  • 1 tbsp butter
  • Fresh herbs (thyme or rosemary)
  • Salt and pepper to taste
  • Optional: Goat cheese or shaved Parmesan

Instructions

  1. Prepare your ingredients: Start by slicing your baguette into ½-inch thick slices. Lay them on a baking sheet and brush one side with olive oil.
  2. Toast the bread: Preheat the oven to 400°F (200°C). Toast the bread for about 10-12 minutes, or until golden and crisp.
  3. Caramelize the onions: Heat 2 tablespoons of olive oil and 1 tablespoon of butter in a large skillet over medium heat. Add the sliced onions. Cook slowly, stirring occasionally, for 20-30 minutes until golden brown.
  4. Sauté the mushrooms: In the same skillet, add more olive oil, then toss in your sliced mushrooms. Cook until golden and seasoned with salt and pepper.
  5. Combine and season: Mix the onions and mushrooms in the skillet, adding fresh herbs and any additional seasoning.
  6. Assemble your crostini: Top each slice of toasted bread with a generous helping of the mixture.
  7. Garnish & serve: Finish with cheese and balsamic glaze if desired. Serve warm.

Notes

Add a drizzle of balsamic glaze for an extra layer of flavor.

  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Category: Appetizer
  • Method: Baking
  • Cuisine: Italian

Nutrition

  • Serving Size: 1 crostini
  • Calories: 280
  • Sugar: 6g
  • Sodium: 350mg
  • Fat: 12g
  • Saturated Fat: 4g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 36g
  • Fiber: 3g
  • Protein: 8g
  • Cholesterol: 15mg

Keywords: crostini, appetizer, caramelized onions, mushrooms, party food