Summer Fruit Crisp

OK, another fruit dessert. It started out being a crostata. I made my pastry dough, put it in the fridge, cooked several other things, and by the time I got it out to roll the kitchen was 95 degrees and it just wasn't going to happen. So my Summer Fruit Crostata became a Summer Fruit Crisp. I think it was for the best really because the combination with Breyer's vanilla ice cream (the kind with the little vanilla bean specks) made everyone very happy.

Here is my recipe, I think, I threw it together pretty fast.

1 lb black plums
1 lb peaches
1/2 pint blueberries
zest and juice of one orange
1/4 cup sugar
1 tablespoon flour

For the Crust:
1 1/2 cups flour
1 cup oatmeal
3/4 cups sugar
3/4 cups brown sugar
1/2 teaspoon kosher salt
2 sticks cold unsalted butter, cut into cubes

Peel the peaches and cut into wedges along with the plums. Add in blueberries and toss with orange zest, juice, sugar, and flour. Pour into baking dish.

Combine flour, sugar, brown sugar, salt, oatmeal, and the cold, diced butter in the bowl of an electric mixer fitted with a paddle attachment. Mix on low speed until the butter is pea-sized and the mixture is crumbly. Sprinkle evenly on top of the fruit. Bake for 50 minutes to 1 hour, until the top is browned and crisp and the juices are bubbly.