Easter Cookie Cake with Mini Eggs and Colorful Frosting - Zest Plate

Ingredients

• 3/4 cup salted butter, melted & slightly cooled
• 1 cup brown sugar, packed
• 1/4 cup granulated sugar
• 1 large egg + 1 egg yolk
• 2 teaspoons vanilla extract
• 2 cups all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup white chocolate chips
• 1/2 cup milk chocolate chips
• 3/4 cup chopped Cadbury mini eggs
• 1/3 cup pastel sprinkles
• 1 stick (1/2 cup) salted butter, softened
• 2 cups powdered sugar
• 1 tsp vanilla extract
• 2-4 tbsp heavy cream
• Food coloring of your choice
• Pastel nonpareils
• Extra chocolate eggs
• Edible Easter decorations, if desired