Preheat oven to 350 degrees Fahrenheit.
In an 8x8 pan, mix blackberries (2c), peaches (3), arrowroot or corn starch (2Tblsp), maple syrup (2Tblsp), and vanilla (1tsp).
In a medium-sized mixing bowl, mix pecans (1/2c), oats (1/2c), whole wheat flour (1/4c), cinnamon (1tsp), nutmeg (1/4tsp), and salt (1/4tsp). Then add maple syrup (1/4c) and mix well. Cut in chilled coconut oil (1/4c).
Once topping is mixed, pour on top of fruit filling.
Bake in preheated oven for 20-25 minutes, until fruit is warmed and topping is browned.
Serve while warm with vegan ice cream!
Best served immediately, but can be kept in refrigerator in airtight container for 1-2 days.