Home-made gluten-free apple crisp

Being that it's fall I had to make some apple crisp. I used to buy a mix from the store that I only needed to add butter to, and spread on top of apples, but these mixes have wheat.  I found a pretty simple gluten-free version and it turned out just as good.  The only difference is cost-wise, as I had to buy some gluten-free oats, but the bag was large and I already had one from making oatmeal cookies.  A great simple gluten-free dessert option.

Must have vanilla ice cream on top