INGREDIENTS
1 cup
all-purpose flour (measured correctly)
1 tsp
cornstarch
3/4 tsp
baking powder
1/4 tsp
salt
2 tbsp
unsalted butter, melted and cooled slightly
1
large egg
2 tsp
vanilla extract
1/2 cup
light brown sugar
2 tbsp
rainbow jimmies (sprinkles)
2 tbsp
white chocolate morsels
1 tbsp
mini chocolate chips, divided