Molten Funfetti Cake

From Nicole Iizuka, POPSUGAR Food

Preheat oven to 425ºF.
Spray 4 8-ounce ramekin dishes with cooking spray and lightly dust the inside with flour. Place on a baking sheet and set aside.
In a microwave-safe bowl, combine white chocolate chips with butter and melt in 30-second intervals until chocolate and butter are smooth.
Whisk in powdered sugar and mix well. Batter will be slightly lumpy. Add eggs and egg yolks, and continue mixing. The batter will smooth out. Add flour and whisk until combined.
Gently fold in sprinkles, being careful to not overmix. You want them to be evenly distributed but do not want the color to run. Evenly distribute the batter between ramekin dishes.
Bake for 11-13 minutes or until the edges are firm but when you shake it, the center is still slightly soft. Remove from oven and let cool for 2 minutes. Run a knife around the edge of the ramekin and then invert onto a plate.
Serve immediately with ice cream and even more sprinkles.