01 -
Set your oven to 350°F (175°C).
02 -
Line two baking sheets with parchment paper or silicone baking mats.
03 -
In a large mixing bowl, beat the softened butter and granulated sugar together using an electric mixer on medium speed until light and fluffy (about 3-4 minutes).
04 -
Add the egg and vanilla extract to the butter-sugar mixture. Beat until fully incorporated.
05 -
In a separate bowl, whisk together the flour, baking soda, baking powder, and salt.
06 -
Gradually add the dry mixture to the wet ingredients, mixing on low speed until just combined into a smooth dough.
07 -
Separate the cookie dough into four equal portions.
08 -
Add one different flavor/color of Jello powder to each portion of dough (e.g., strawberry for red, orange for orange, lime for green, grape for purple) and mix thoroughly until color is uniform.
09 -
Scoop tablespoon-sized portions of dough, roll into balls, and coat in granulated sugar.
10 -
Place the sugar-coated dough balls on prepared baking sheets, leaving about 2 inches between each cookie.
11 -
Bake in the preheated oven for 8-10 minutes, or until the edges are set but the centers remain soft.
12 -
Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.