Preheat oven to 350° and grease a 9x13 pan.

Crumble:

   - graham crackers to make 1 cup

Measure:

   - 1/2 cup toffee bits

Melt:

   - 1 cup butter

While butter melts, mix in a medium bowl:

   - 15 oz pumpkin puree

   - 10-12 oz evaporated milk

   - 1 cup brown sugar

   - 3 eggs

   - 2 tsp cinnamon

   - 1/2 tsp ginger

   - 1/4 tsp nutmeg

   - 1/4 tsp cloves

   - 1/4 tsp allspice

Pour the pumpkin mixture into the 9x13 pan.

Sprinkle evenly on top of the pumpkin mixture:

   - 1 box yellow cake mix

Spread out the graham crackers on top of the cake mix, followed by the toffee bits.

Pour the melted butter evenly over everything.

Bake for 45-50 minutes until edges are lightly browned and the center is set.