Preheat oven to 350 degrees.
1. In a large mixing bowl of an electric mixer, beat the eggs well, add in the sugar and butter and mix well. Add the pumpkin and vanilla and mix. Add the flour and spices and mix well. Spread in a 9 X 13-inch greased pan.
2. Bake for 25-35 minutes or until a toothpick comes out clean. Let cool.
3. To make frosting: In a small bowl, beat cream cheese, butter, vanilla and powdered sugar until just mixed, careful not to over mix.
When the brownies are cool, frost. (I only needed to use about 1/2 of the frosting.) You can sprinkle chopped nuts on top of the brownies, if desired. Cut into squares and serve. Enjoy.
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