Preheat the oven to 400° and lightly spray a 3 quart or 11x7 baking dish.
In a large bowl add fruit, lemon juice and lemon zest. Stir.
In a small bowl, whisk sugar, cornstarch, cinnamon, salt, and nutmeg together and then sprinkle onto fruit. Stir to coat. Let sit while you prepare the crisp topping.
In a medium bowl, whisk flour and brown sugar together until combined.
Add butter to flour mixture and using a pastry cutter, or electric mixer on low speed, mix butter until crumbly.
Pour fruit into the prepared baking dish and add ¼ cup of butter that has been sliced into small pieces. Place randomly over the fruit.
Top with the flour mixture and spread evenly over the fruit.
Bake uncovered at 400° for 55-60 minutes or until dough is baked through.
Carefully remove from oven and serve warm with a scoop of vanilla ice cream.