1/3cupwhite whole wheat flourcan sub regular flour or whole wheat
1/4cupbrown sugar
1/2cupwalnutschopped
1/2tspcinnamon
1/4tspsalt
1/4cupbutterdiced
Instructions
Preheat the oven to 350 degrees.
Boil a large pot of water and add sweet potatoes. Boil on high heat until sweet potatoes are fork tender, about 10-15 minutes.
Drain the sweet potatoes well and add the rest of the filling ingredients to the pot (maple syrup, butter, milk, vanilla, cinnamon, and salt). Using a handheld mixer or potato masher, combine the ingredients well and mash potatoes until smooth.
Next, make the crumble topping in a medium sized bowl. Add rolled oats, white whole wheat flour, brown sugar, walnuts, cinnamon, salt and butter.
Combine very well (I prefer to use clean hands to thoroughly incorporate the butter) until the topping has a crumbly "wet sand" consistency.
Next, add the sweet potato mixture to a large casserole dish that's been sprayed or coated with oil or butter and smooth the top with a silicone spatula.
Add the crumble mixture evenly to the top of the sweet potato mixture.
Bake for 30-40 minutes until topping is golden brown. Enjoy!