In a large mixing bowl, pour in the sugars and the melted butter. Whisk until fully combined.
In the same bowl, crack in both eggs and pour in the vanilla extract or paste. Continue to whisk until the batter becomes fluffy and smooth.
Once the wet ingredients have been fully incorporated, pour in the flour, baking soda, and baking salt. Switch to a rubber spatula and fold in the dry ingredients.
Halfway through folding in, add the mini eggs and continue to fold the batter together to combine and incorporate the eggs. Add the batter to a prepared pan (I used an 8-inch pan), and top with any remaining mini eggs before baking.
Bake at a preheated 350º oven for 25 minutes. Let cool for 20-25 minutes before removing from the pan.
Notes
Do not over-mix the batter. If you over-mix it will work the gluten too much in the flour, causing the dough to become dense and tough. We want chewy and moist! My trusty tip is to switch to a sturdy rubber spatula to fold in the dry ingredients and the mini eggs. Works like a charm!