Preheat the oven to 350 degrees and line a baking sheet with parchment paper. In a medium-sized mixing bowl, combine the butter, brown sugar, and sugar and cream them together. Add the egg and vanilla and mix until combined. Stir in the flour, baking soda, and salt. Add the oats to the mixture and mix well. Fold in the miniature chocolate chips and 1 cup of the crushed Cadbury Mini Eggs.

Use a 3-tablespoon cookie scoop (size 20) and create cookie dough balls and put them 3” apart on the prepared baking sheet. Bake for 8-9 minutes or until the edges start to brown. Remove from the oven and top with remaining crushed Cadbury Mini Eggs. Let cool completely on the baking sheet (at least 10 minutes).