Preheat oven to 400 degrees. Place the fruit in a mixing bowl. Add the sugar, cinnamon, salt, cornstarch and almond extract. Stir to combine and then let rest on the counter while preparing the crust.
In a separate mixing bowl, stir together the flour, starch, oats and brown sugar. Add the melted butter and stir to combine. Press half of this mixture into a well-buttered or parchment lined 9x13-inch pan. Pour the fruit over the bottom crust and then sprinkle the rest of the dry mixture on top.
Bake for 30-35 minutes, until the crust turns golden brown. Serve warm from the oven or let cool completely and slice int servings.