Mix well in mixer; set aside.
Cream Cheese Mixture:
Mix together until smooth.
Put half of the pumpkin mixture in a greased 13”X9” baking pan. Top with the cream cheese mixture. Then add the remaining pumpkin mixture. Run a sharp knife through the mixture to get a marbled effect.
Bake in a 350 º F. oven for 35 to 40 minutes.
Make the Brown Butter Frosting:
Heat the butter in a heavy pot until lightly browned. Stir in the remaining ingredients. Pour warm frosting over warm bars.