In a saucepan over medium heat, melt the butter. Once it starts boiling, keep stiring. The butter will start to foam, and continue stiring until the butter passes the foamy phase and becomes a deep amber color. Don't leave your stove at any point as the butter may easily burn. This will take up to 5 minutes total.
1/2 cup butter
Remove from heat and allow to cool for 15 minutes. In the meantime, measure and prep the rest of the ingredients.
Preheat the oven to 350°F and line a baking tray with parchment paper or a silicone baking mat. Set aside.
In a bowl, whisk together the brown butter and brown sugar.
1/2 cup butter, 1/2 cup brown sugar
Add in egg and vanilla and continue whisking.
1 egg, 2 tsp vanilla
With a spatula, fold in flour and baking soda until just combined. Make sure not to overmix!
1/2 tsp baking soda, 1 + 1/4 cups all-purpose flour
Add in Cadbury Mini Eggs and chocolate chips.
3/4 cups Cadbury Mini Eggs, 1/2 cup chocolate chips
Scoop 3 tbsp of cookie dough out onto the lined baking sheet, 2 inches apart.
Bake the cookies for 10-12 minutes. You will know it's ready when the edges are are lightly golden and the centers have just set.
After removing from the oven, allow to sit on the cookie tray for an additional 10 minutes. The cookies will continue to bake and set.
Transfer to a cooling rack to completely cool and enjoy!