Preheat the oven to 350°F and line your baking sheet with parchment paper.
Whisk egg yolks, sugar, melted butter and vanilla extract together until combined.
2 Egg yolks, ¼ Cup Granulated sugar, ½ Cup Brown sugar, ½ Cup + 1 Tablespoon Unsalted butter, 1½ teaspoon Vanilla Extract
Fold in your sifted flour, baking powder, baking soda and salt and mix until smooth.
1 Cup All-purpose flour , ½ teaspoon Baking powder, ¼ teaspoon Baking soda, teaspoon Kosher salt
Add the crushed mini eggs and fold into the dough, reserving some chopped mini eggs to add to the top of the cookies before baking.
1 Cup Cadbury mini eggs
Form dough into balls using a small cookie scoop, or about 1.5 Tablespoons, and place on a parchment-lined baking sheet or plate. Place in the fridge to chill for about 20-30 minutes.
Bake for 10 minutes before removing from the oven, topping with flakey salt and reshape as desired by using a large circular cookie cutter to round out the edges.
Flakey sea salt
Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a cooling rack.