Mix the flour/sugar in with the peaches and blueberries. Toss to coat.
For the Crisp:
1 cup all purpose flour (minus 2 Tablespoons--used above)
3/4 cup sugar
1 teaspoon baking powder
1/4 teaspoon salt
1/4 teaspoon ground cinnamon
Then mix in until crumbly:
1 egg, beaten
1/2 cup cold butter or margarine
Pour over the blueberry/peach mixture.
Bake at 350 degrees for 45-50 minutes.
Serve warm with ice cream or whipped topping.