fruit galette - a free form one crust 'pie'

This is my favorite kind of dessert.  I had an extra packaged pie crust and I was hungry for a fruit pie. Heat oven to 375 degrees. Line a baking sheet with parchment paper and lay the pie crust open on it.  Mix together 3 c. fruit (here I used a mixture of blueberries, blackberries and raspberries), sugar to taste (1/3 c. for these berries), 2 Tbs. cornstarch, and 1 Tbs. fresh lemon juice.  Just pile the fruit up in the middle of the crust, leaving about 1-2" unfilled around the border.  Fold the crust edges up around the fruit, leaving it open in the middle.  Brush dough edges with an egg wash and sprinkle with raw sugar.  Bake one hour, let cool a bit, and enjoy!