Spicy Pasta with Sweet Potatoes

1 lg sweet potato, peeled and cut into 3/4 inch cubes (2 cups)
1/2 tsp each sugar, chili powder, and cinnamon
8 oz dried rigatoni
1/3 cup peanut butter
1 3 oz pkg cream cheese cut up
2 tsp asian chili sauce (such as Sriracha sauce)
1 Tb soy sauce
6 green onions thinly sliced

Preheat oven to 450. Oil a rimmed baking pan, set aside. Place sweet potato in bowl. Toss with 1 Tb olive oil, sugar, chili powder, and cinnamon. Spread in prepared Pan (Can be used as a side dish as well)

Meanwhile cook posta. Drain reserving 1 cup pasta water.

In saucepan, combine peanut butter, cream cheese, chili sauce, and soy sauce. Whisk in 3/4 cup of the hot pasta water. Stir over med heat until heated through. If too thick, stir in additional water. Stir in most of the green onions. Serve sauce over pasta w/sweet potatoes and remaining onion.