In a large mixing bowl, whisk melted butter with both sugars until smooth.
¾ cup unsalted butter, 1 cup light brown sugar, ¼ cup granulated sugar
Add the egg, egg yolk, and vanilla, then whisk until glossy.
1 large egg + 1 egg yolk, 2 teaspoon vanilla extract
In a medium bowl, whisk together flour, baking soda, baking powder, salt, and cinnamon.
2 cups all-purpose flour, ½ teaspoon baking soda, ½ teaspoon baking powder, ½ teaspoon salt, ½ teaspoon ground cinnamon
Gradually add dry ingredients to the wet mixture, folding just until combined.
Chill the dough for 30 minutes to prevent overspreading.
Preheat oven to 350°F and line cookie sheets with parchment paper.
Use a cookie scoop to portion about two tablespoons of dough per cookie.
Bake for 10 to 12 minutes until edges are golden brown and centers look soft.
Immediately press an indent into the center of each cookie using a spoon. Let cookies cool completely on the sheet.
In a saucepan on the stovetop, combine butter, brown sugar, and maple syrup. Stirring frequently, cook until bubbling and thickened, about 3 to 4 minutes.
1 cup light brown sugar, ½ cup maple syrup, ⅔ cup unsalted butter
Remove from heat and stir in vanilla, cinnamon, and pecans. Allow filling to cool slightly.
½ teaspoon ground cinnamon, 1 teaspoon vanilla extract, 1 ½ cups pecans
Spoon the gooey pecan filling into the center of each cooled cookie.
Let the topping set for about 20 minutes before serving.