01 -
First, make sure your oven's warmed up to 350°F. Put parchment paper or a reusable mat on your baking sheet so nothing sticks.
02 -
Grab a mixing bowl, and beat together butter and sugar on medium until fluffy and pale (2-3 minutes). Crack in your eggs along with the vanilla, then stir until everything’s smooth.
03 -
In a separate dish, whisk flour, soda, salt, and tartar together. Slowly add this to the wet mix. Stir gently on low until dough comes together. Toss sprinkles in and fold gently for even sprinkle love.
04 -
Break dough apart into equal quarters. Leave one uncolored, and mix pink, blue, and purple gels into the others using clean hands or a spatula. Gloves make cleanup a breeze.
05 -
Pop the three colorful doughs with the plain one into a big bowl. Gently fold chunks around briefly (don’t overdo it!) until you spot a tie-dye swirl effect.
06 -
Portion the dough into balls (approx. 2 tbsp each). Roll them in sugar or sprinkles if you want extra crunch! Set them 2 inches apart on your sheet for space to bake.
07 -
Let the cookies bake for 10 to 12 minutes. You want firm sides with soft middle bits—they’ll finish cooking on the tray after removing from the oven.
08 -
Leave cookies on the tray for 5 minutes, then move them to a rack to cool fully. They’ll stay wonderfully chewy while they settle.