Line an 8x8 inch metal pan with parchment paper. Spray paper with non-stick cooking spray.
In a medium pot, combine sugars, maple syrup,butter, pumpkin, cream and pumpkin spice over medium heat. Stir until butter is melted and all ingredients are combined. Bring to a simmer and cook 12 minutes or until temperature reaches 238 degrees on a candy thermometer. Stir in walnuts.
Pour mixture into lined pan. Cool 1 hour on the counter. Cool an additional 1 hr in fridge. Slice into 36 squares.