Caramelized Onion & Mushroom Crostini
Caramelized Onion & Mushroom Crostini is a delectable appetizer that combines sweet, caramelized onions and savory mushrooms atop crispy baguette slices. This dish is not only visually stunning but also packed with flavor, making it perfect for gatherings or a cozy night in. Each bite offers a delightful crunch and a burst of umami, elevating simple ingredients to gourmet heights. Whether you’re entertaining guests or treating yourself, this crostini is sure to impress!
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Total Time: 40 minutes
- Yield: Approximately 12 servings 1x
- Category: Appetizer
- Method: Baking
- Cuisine: Italian
Ingredients
- 1 fresh baguette (about 10–12 oz)
- 2 medium yellow onions, thinly sliced
- 8 oz cremini or button mushrooms, chopped
- 3 tbsp extra virgin olive oil (divided)
- 1 tbsp balsamic vinegar
- 2 tsp fresh thyme leaves
- Salt and pepper to taste
Instructions
- Preheat your oven to 400°F (200°C). Slice the baguette into ½-inch pieces and arrange on a baking sheet. Drizzle lightly with 1 tablespoon of olive oil.
- Bake the baguette slices for 8-10 minutes until golden brown and crisp.
- In a skillet over medium heat, add 2 tablespoons of olive oil and sliced onions. Cook for about 15-20 minutes, stirring frequently until translucent and golden brown.
- Add chopped mushrooms to the skillet, seasoning with salt and pepper. Sauté for an additional 5-7 minutes until tender.
- Stir in balsamic vinegar and fresh thyme; cook for another minute.
- Assemble by topping each toasted baguette slice with the onion and mushroom mixture. Serve warm.
Nutrition
- Serving Size: 1 crostini (approx. 30g)
- Calories: 120
- Sugar: 2g
- Sodium: 150mg
- Fat: 6g
- Saturated Fat: 1g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 14g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 0mg
Keywords: For added creaminess, sprinkle goat cheese on top before serving. You can substitute mushrooms with roasted red peppers for a different flavor profile. Store leftovers in an airtight container in the fridge for up to three days; reheat in a preheated oven at 350°F (175°C) for optimal texture.