Description
Mushroom Puff Pastry Bites are golden, flaky, and savory appetizers filled with caramelized onions, earthy mushrooms, fresh herbs, and melted cheese. Perfect for holidays, parties, or casual gatherings, these bite-sized treats are elegant yet easy to make and guaranteed to impress.
Ingredients
2 tbsp extra virgin olive oil, divided
1 large yellow onion, thinly sliced
½ tsp kosher salt
16 oz baby bella mushrooms, sliced
½ tsp minced garlic
2 tsp finely chopped fresh thyme (or ½ tsp dried thyme)
¼ tsp ground black pepper
½ cup shredded Gruyere or Swiss cheese (about 1 ½ oz)
2 sheets frozen puff pastry (10-inch square, thawed)
1 egg, beaten
3 tbsp whole-grain mustard
Chopped fresh parsley, for garnish
Instructions
- Preheat oven to 400°F (200°C) and line two baking sheets with parchment paper.
- In a skillet, heat 1 tbsp olive oil over medium-low. Add onion and salt, cooking until golden and caramelized, about 25 minutes. Transfer to a bowl.
- Add remaining oil and mushrooms to the skillet. Cook until tender, about 5 minutes. Stir in garlic, thyme, and pepper, cooking 1 more minute. Mix with onions and stir in shredded cheese.
- On a lightly floured surface, roll puff pastry into 10.5-inch squares. Cut into 2-inch rounds (or squares to reduce waste).
- Arrange pastry rounds on baking sheets. Brush with egg wash and prick each with a fork.
- Top with ¼ tsp mustard and 1 tbsp mushroom mixture.
- Bake for 25 minutes, rotating pans halfway, until puffed and golden. Let cool 5 minutes, garnish with parsley, and serve warm or at room temperature.
Notes
- Caramelize onions low and slow for the richest flavor.
- Gruyere cheese adds depth, but cheddar, Parmesan, or Fontina also work well.
- Make ahead by preparing the filling in advance; assemble and bake when ready.
- Reheat in a hot oven for crisp results—avoid microwaving.
- Prep Time: 20 mins
- Cook Time: 25 mins
- Category: Appetizer
- Method: Baking
- Cuisine: French-Inspired
Nutrition
- Serving Size: 1 bite
- Calories: 65
- Sugar: 1g
- Sodium: 85mg
- Fat: 4g
- Saturated Fat: 1.5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 10mg
