Prepare brown butter: In a small saucepan, melt the butter over medium heat. Continue cooking until it foams, then turns golden with brown amber specks on the bottom (4 to 6 minutes). Remove from heat and pour into a small bowl, let cool slightly.
6 tablespoons unsalted butter
Preheat oven to 350°F.
In a large bowl, whisk together pumpkin puree, brown sugar, granulated sugar, pumpkin pie spice and salt until smooth.
15 ounces pumpkin puree, ¾ cup light brown sugar, ¼ cup granulated sugar, 3 teaspoons pumpkin pie spice, ½ teaspoon fine sea salt
Whisk in eggs one at a time. Stir in vanilla extract and then slowly add in cooled brown butter, whisk until fully incorporated.
3 large eggs, 1 teaspoon vanilla extract
Whisk in heavy cream until smooth and custardy.
1 cup heavy whipping cream
Lightly flour cutting board or countertop surface, roll one pie disk into a 12-inch circle.
Fit into a 9-inch pie dish, leaving a slight overhang. Pour filling into prepared pie crust. Bake pie on a baking sheet (in case of overflow) for 40 minutes, or until edges are set but the center still has a slight jiggle.
If edges of crust brown too quickly, tent with foil or use a pie shield. Cool completely on a wire rack for at least 2 hours. Chill if desired, then serve with whipped cream.
Optional: Roll out remaining pie crust. (This step is optional. You can also just save the extra pie crust for another pie.) Cut into leaf shapes or pumpkins – whatever you want. The dough for the decorations should be a bit thicker and you will have leftover dough unless you add decorations along the whole crust edge. These should be baked separately on a baking sheet.