Cream butter, white sugar and brown sugar until incorporated.
Add egg and mix until incorporated.
Add baking powder, baking soda, salt and vanilla extract and mix.
Add flour and mix until halfway incorporated.
Add milk and crushed chocolate eggs and mix just until the dough comes together. NOTE: I opted to crush my mini eggs because they seemed too big.
Scoop 2 TBSP sized balls (or whatever size you prefer) and place 2 inches apart on a parchment lined baking tray.
Bake at 350°F for 12-15 minutes or until the edges are set and just beginning to brown and the centre still looks a little wet. Let cool on the baking tray for at least 10 minutes before eating.