In the bowl of a food processor pulse the Speculoos cookies until finely ground. Add the butter and pulse until moistened. Use the bottom of a measuring cup, glass, or ramekin to press the crust mixture into the bottom and up the sides of a fairly deep 9-inch pie plate. Bake until fragrant, about 12 minutes. Cool completely on a wire rack.
Read the filling instructions completely before beginning.
In a small stainless saucepan, combine the granulated sugar with 1/4 cup water. Gently stir with a silicone spatula. Cook over medium heat until the sugar is dissolved. Increase the heat to medium high and continue to cook, swirling the pan occasionally without stirring, until the mixture turns a dark amber color, about 10 minutes total. Be careful not to burn. You can always return to heat and cook more but you can't undo a burnt butterscotch!
Gradually ladle about a quarter of the hot liquid into the egg yolks, whisking constantly, to temper the eggs. Add another quarter of the hot mixture to the eggs, whisking. Slowly transfer the egg mixture back into the saucepan. Whisking constantly, bring to a boil over medium-high heat. Boil for 2 to 3 minutes, or until thickened like pudding.
Spread over the chilled pie. Garnish with Speculoos crumbs, if desired. Serve chilled.
Butterscotch Pie https://handletheheat.com/butterscotch-pie/ October 17, 2018