In a stand or had mixer on medium speed, combine all ingredients together. Mixture should be crumbly.
In a 9x9 square pan add 1 1/2 cups of crumble to the bottom of the pan, then press it down. Strain canned pineapple. Add fruit to the top of mixture. Sprinkle 1 tbsp. of Dark Brown Sugar over pineapple. Pour the rest of the oat mix on top. Press down slightly. Bake for 10-15 mins. Make sure that the to is a golden brown.
Remove from oven and let cool. ENJOY!!!