1-First Step: Prepare the pecan pie filling Measure all filling ingredients before you start. In a small saucepan, whisk together 1/2 cup packed light or dark brown sugar, 1/4 cup heavy whipping cream, 1 large egg, 1/2 teaspoon vanilla extract, 2 tablespoons corn syrup or maple syrup, and 1/8 teaspoon salt. Do not add pecans yet. Place the saucepan over medium heat and cook, stirring constantly, until the mixture begins to bubble and thicken, about 5-7 minutes. When it thickens enough to coat the back of a spoon, remove from heat and stir in 3/4 cup coarsely chopped pecans. Let the filling cool to room temperature, then refrigerate for 1 hour to firm up.

2-Second Step: Make the cookie dough While the filling chills, prepare the dough. In a mixing bowl, cream 1/2 cup softened unsalted butter with 1/4 cup granulated sugar and 1/4 cup packed light brown sugar until light and fluffy, about 2-3 minutes. Mix in 1 large egg yolk, 1 teaspoon vanilla extract, and 1 tablespoon whole milk until combined. In a separate bowl whisk together 1 3/4 cups all-purpose flour, 1/2 teaspoon baking soda, 1/2 teaspoon baking powder, and 1/4 teaspoon salt. Fold the dry ingredients into the wet mixture until just combined. The dough should be soft but hold its shape; if it feels too sticky, chill longer. Chill the dough in the refrigerator for 30 minutes to 1 hour to firm it and reduce spreading during baking.

3-Third Step: Shape cookies and add filling Preheat the oven to 375°F and line baking sheets with parchment paper. Divide the chilled dough into 13 equal portions. Roll each portion into a smooth ball, then press a teaspoon measure into the center of each ball to form a shallow divot for the filling. Spoon about 1 teaspoon of the chilled pecan pie filling into each divot. After filling all cookies, chill them on the baking sheet for 15 minutes. Chilling at this stage helps the cookies keep their shape and prevents excess spreading while baking.

4-Fourth Step: Bake and cool Bake the cookies at 375°F for 8-12 minutes. Watch for golden edges on the cookies and bubbling filling. Baking times vary with oven and cookie size, so plan to check around 8 minutes. Overbaking will dry the dough and underbaking leaves it raw; aim for a light golden edge and a set bottom. Remove cookies from the oven and place on wire racks to cool. They will firm up as they cool and the filling will set slightly. If desired, spoon additional filling on top while still warm for a glossy finish.

5-Final Step: Finish and serve When cookies are fully cooled, top with extra chopped pecans and drizzle with 2 ounces melted dark chocolate if using. Serve at room temperature or slightly warm. These cookies store well and make a great portable dessert for gatherings.