Preheat oven to 350℉ and grease a tart/pie dish or baking sheet.
Combine butter, sugar, brown sugar and vanilla.
1 cup butter, ¾ cup white granulated sugar, 1 cup light brown sugar, 1 tablespoon vanilla extract
Add eggs until just blended.
2 eggs
Add flour, baking soda, baking powder and salt. Combine. You can add the Cadbury eggs now, or wait and add them as noted in the final step, below.
3 cups all-purpose flour, 1 teaspoon baking soda, ½ teaspoon baking powder, ¼ teaspoon salt
Scoop into baking dish, press until smooth.
Optional: Bake 10 minutes, remove from oven and press candies into top and return for remaining 10 minutes (or until cookie cake is golden brown on top). See notes for more details on baking time.
1 cup Cadbury Candy Eggs
Remove from oven and allow to cool before serving. Enjoy!
Notes
*Bake time varies based on dish being used. For smaller, deeper dishes, try using two dishes (to spread the dough out) or increase baking time to preference.Use the toothpick test to ensure the cookie cake is baked all the way through!