Simple puff pastry appetizers are delish for any party, like these Grape Puff Pastry Bites made with grapes, puff pastry, and Gruyere cheese! Makes 12 bites.
Roll out puff pastry into a 12’’x12’’ square. Divide the sheet into 12 squares and place each of them in a lightly greased muffin tin and refrigerate for 20 minutes.
In a medium saucepan, melt butter over medium-low heat. Add grapes, rosemary, and walnuts and sauté until softened and fragrant, 8-10 minutes. Remove from heat and set aside.
Whisk the egg white in a small bowl.
Take muffin tin of chilled puff pastry cups out of the refrigerator. Working quickly, evenly divide the sautéed grape mixture into each cup.
Brush the exposed edges of the pastry with egg wash, then top each cup with the grated Gruyere cheese, about 1 Tbsp. TIP: If the tin and puff pastry no longer feel chilled, place in the refrigerator for 5 minutes.
Bake for 20-25 minutes, or until puffed and golden brown. Remove from the oven and serve warm.