Pumpkin Cheesecake Truffles

Name: Pumpkin Cheesecake Truffles
Prep time: 30 min
Cook time: 15 min
Total time: 45 min
Cuisine: European, American, Mediterranean
Ingredients: 1 tablespoon butter; 4 ounces cream cheese, softened at room temperature; 1/2 cup canned pumpkin puree; 1 (14-ounce) can sweetened condensed milk; 1 1/2 teaspoons pumpkin pie spice; 1/2 cup graham cracker crumbs; 1/3 cup white chocolate chips; Orange food coloring (or red and yellow food colorings), as needed, optional; Granulated sugar, as needed, for rolling; Chocolate chips, for topping