Apple Strawberry Crumble

Preheat oven to 350 F. Grease a 9" pie plate or baking pan and set aside.
Make the Topping: In a bowl, combine flour, oats, sugars, cinnamon and salt. Pour in your melted butter and mix until incorporated and mixture resembles wet sand. Add to the refrigerator and proceed to making the filling.
Make the Filling: Slice strawberries and peel and cut apples and add to a bowl. Zest and juice part of a lemon and add brown sugar, cornstarch, cinnamon and salt. Toss together gently until all of the fruit is covered with sugar mixture. Add to a 9 inch pie pan or baking dish.
Remove topping from refrigerator and sprinkle on top of apple/strawberry mixture. Cover with tinfoil and bake for 20 minutes, remove tinfoil and continue baking for another 15-20, or until topping becomes golden brown and the filling is bubbling around the edges.