Preheat the oven to 375 degrees
Peel the sweet potato and apple and chop them into 1 inch chunks
Heat up a large pan and add 2 tbsp of the butter and let melt. Once melted, add the apples and sweet potatoes and keep the pan over medium high heat. After they have cooked for 5 minutes, add 1/4 cup of water and keep on the heat for an additional 5 minutes. Stir occasionally
While the apples and sweet potatoes are cooking, mix the oatmeal, crushed walnuts, flour, and salt in a bowl. Add 1/4 cup of melted butter and 1/4 cup of maple syrup
After the sweet potatoes and apples have cooked for 10 total minutes, add 2 cups of the cranberries, and all the spices: cloves, cinnamon, allspice, and nutmeg. Cook down for 5 minutes then add the remaining 1/4 cup of maple syrup and cook for 1-2 minutes.
Once the cranberries are bursting, add the remaining one cup of cranberries and then add the whole mixture to a 9x9 oven safe baking dish or any similar size. Add a dusting of cinnamon to the mixture prior to the crumble topping
Add the crumble topping over the mixture. Add 6-8 pats of butter on the crumble topping and pop in the 375 degree oven for 35-40 minutes. Once the top is golden brown it is finished!