Pre-heat oven to 350 degrees and lightly grease a cookie sheet.
In a medium bowl, whisk together flour and baking powder.
In the bowl of a stand mixer or in a large bowl with a hand mixer, cream together the butter and sugar until light and fluffy, 2-3 minutes. Mix in egg yolks and vanilla extract.
Pour in half the homemade strawberry milk and half the flour mixture and mix until just combined. Repeat with remaining milk and flour mixture. Take care not to over-mix.
Fold in the chocolate chips and sprinkles. If you want to make the cookies a little "pinker," mix in some food coloring, too.
Drop tablespoonfuls of batter about an inch apart on prepared cookie sheet.
Bake cookies for 10-12 minutes, until just starting to turn golden around the edges. Cook on pan for a couple minutes before transferring to baking racks to cool completely.