Melt butter in a saute pan. Add in ground sausage and sage leaves. Break apart sausage into tiny clumps. Saute until sausage is fully cooked, about 5-10 minutes.
Stir in pumpkin, sugar, cinnamon, salt, and pepper. Remove from heat.
Whisk one egg and set aside. Heat frying oil or deep fryer to medium heat.
To prepare the wontons, place 1-2 teaspoons of pumpkin filling in the center of wonton wrapper. Dip your finger into whisked egg, and trace a border around the edges. Fold wontons in half diagonally.
Deep fry for 30-45 seconds. Drain on a paper towel.
Serve with balsamic dressing or country gravy.
Notes
I personally prefer spicy Italian sausage for a little extra zest, but feel free to experiment with different flavors!