Preheat the oven to 350F
Wash the sweet potato
Peel the sweet potatoes and cut into 2 inch cubes
Place potatoes in a medium saucepan and cover with salted water
Bring to a boil you will reduce and simmer until potatoes are very tender
In the meanwhile chop the peppers
Chop the onions
Chop the garlic
Add the olive oil to a frying pan on medium heat. Once it's hot add the onions and peppers until glistening then add the garlic
Cook until you smell the garlic (approx. 1 minute) remove all the veggies from the heat and place into a bowl
Brown the ground turkey (you may have to add in a little more oil to the pan)
Add in the brown sugar and the spices to the meat
Once browned add in the tomato paste
Add the water
Taste and decide if the mixture needs any more spice
Let cook until it reduces into a thicker sauce consistency
Drain the potatoes and return them to the pot
Add the butter and mash them
Add the turkey mixture to a casserole dish or a aluminum foil baking pan
Layer the green beans on top
Add dollops of sweet potato so that it will spread evenly
Spread the mashed sweet potato evenly on the top
Sprinkle with the grated cheese ( you may add more butter if you prefer)
Bake for 1 hour uncovered