Preheat oven to 350 degrees F. Line a 9x13 baking dish with parchment paper that goes
up the sides.
Begin with the shortbread crust. In a stand mixer fitted
with a paddle attachment, combine butter and both sugar. Paddle until smooth,
add egg yolk. Add salt, cinnamon, ginger, then flour, a little at a time,
scraping down the sides as needed. Add vanilla last. The mixture will be very
crumbly. Remove dough from bowl and press it into the prepared dish to create an
even shortbread layer. Bake for 20 minutes, or until sides are lightly golden
brown. Cool at room temperature for 15 minutes.
Start the pumpkin caramel by combining all ingredients into
a large sauce pot. Turn on medium heat and stir with a spatula for 12-15
minutes. Stir frequently and do not leave as the ingredients can burn quickly. After
the ingredients melt together, you’ll want to boil it down until it turns a caramel
color. Pull the pumpkin caramel and pour it over the cooled shortbread crust.
Let this sit at room temperature for 2 hours to set up.
To prepare the ganache, combine chocolate chips and cream in
a microwave safe bowl and microwave in 30 second increments until melted. Stir gently
with a spatula as to not create air bubbles. Once smooth, pour over the pumpkin
caramel and spread it out with a spatula. Sprinkle sea salt lightly over the
ganache. Chill in the fridge for 1 hour.
To serve, run a knife around the edge of the dish. Use the
parchment paper to pull it out of the dish. Use a hot knife to cut 2” squares,
wiping the knife after each cut. Serve! Leave in an airtight container at room temperature or freeze if desired.