Preheat the oven to 350℉. Line baking sheets with parchment or silicone baking mats. Set aside.
Combine flour and baking soda in a small bowl and set aside.
1¾ cups flour, 1 teaspoon baking soda
In a large bowl, beat softened butter and sugar until light and fluffy.
¾ cup butter, softened, ¾ cup sugar
Add dry pudding mix and beat until incorporated. Add egg and mix well. Gradually add the flour mixture, beating well after each addition.
1 package 5.1 ounce Instant Jell-O Vanilla Flavor Pudding, 1 large egg
Gently stir in sprinkles.
½ cup Christmas sprinkles, plus more for dipping
Using a #40 cookie scoop to portion out the cookies. Before placing the dough ball on the prepared baking sheet, dip the top in extra sprinkles.
Bake for 9 to 11 minutes or until the center is set and the edges of the cookies are lightly browned. Remove from the oven and cool for 3 to 5 minutes on the baking sheet before removing them to a wire rack to cool completely.