Preheat oven to 350 degrees. Prepare 8-9 in cake pan by lining with foil or parchment and then rubbing with butter or spray.
Spread pecans onto baking sheet and toast in the oven for 5-10 minutes until lightly toasted.
Melt butter, stir in brown sugar and pecans.
Pour into cake pan and spread out evenly.
In a medium bowl, combine cake mix, pumpkin, eggs, oil and spice. Mix with electric beaters until just combined. Pour over topping mixture
Bake for 40-50 minutes or until a knife comes out clean.
Let cool on rack for 5 minutes. Do not allow it to cool completely. While still warm, turn out onto a plate by setting a plate upside down on the bottom of the cake pan (make sure any edges of the foil/parchment are sticking out for you to grab) and gently flipping plate/cake pan over. Set on the counter and give the bottom of the cake pan a tap. Keep your fingers crossed and gently pull off the pan and peel away the foil/parchment.