Pour mixture into an 8x8’’ or similar size casserole dish or pie plate. Spoon the topping evenly over the berry filling. Do not pack the topping, you want it to be loose over top.
Frozen berries work better than fresh ones with this recipe, so I recommend you save your fresh berries for something else, and save your pennies by purchasing a bag of Frozen Triple Berries from your grocery store instead.
You can easily make this recipe Gluten Free by substituting the All Purpose Flour and Rolled Oats for a Gluten Free option. Both ways taste delicious!
If you are trying to get rid of some frozen fruit, you can substitute the Frozen Triple Berry mixture for just about anything. This recipe works well with strawberry peach, or any other combo you can think of!