Blueberry Croissant Puff! Blueberry Croissant Puff. Oh boy, this is a keeper recipe! This Puff Pastry Blueberry recipe is perfect for breakfast, brunch or that sweet treat after any meal. In a large saucepan, combine 1/2 cup blueberries, sugar, cornstarch and lemon zest. The croissant filling is lovely and puffy and made … Directions. Mash well with a fork. It's full of delicious blueberries, bursting with juiciness. Blueberry Puff Pastry Rolls are a flaky, buttery blueberry pastry that’s quick, easy and delicious. Bring to a boil over low heat; cook and stir for 2 … THIS POST HAS BEEN UPGRADED FROM 11/2/17 TO IMPROVE READER EXPERIENCE. A lovely easy recipe perfect for breakfast, brunch or dessert!