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Delicious Cadbury Egg Cookie Bars decorated with chocolate and Cadbury eggs

Cadbury Egg Cookie Bars

Soft, buttery cookie bars studded with Cadbury Mini Eggs and draped in a silky blue-tinted frosting for a stunning spring dessert.
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Prep Time 30 minutes
Cook Time 25 minutes
Total Time 55 minutes
Servings: 12 bars
Course: Dessert, Snack
Cuisine: American, Easter
Calories: 300
Ingredients Method Notes

Ingredients
  

For the Cookie Bars
  • ¾ cup butter, melted Preferably salted
  • 1 cup light brown sugar Pack it slightly for consistent results
  • ⅓ cup granulated sugar
  • 1 tbsp vanilla extract
  • 2 large eggs, room temperature
  • 2 cups all-purpose flour
  • 1 tbsp corn starch
  • ½ tsp baking soda
  • ½ tsp salt
  • ⅔ cup semi-sweet chocolate chips
  • 1 cup roughly chopped Cadbury Eggs 1 cup in batter + 1 cup for garnish
For the Frosting
  • ¾ cup butter, room temperature Preferably salted
  • 3-4 cups powdered sugar
  • 1 tsp vanilla extract
  • 2-3 tbsp milk, room temperature
  • ¼ tsp salt
  • 1 tbsp cocoa powder For chocolate accent
  • 1 tbsp warm water To mix with cocoa powder

Method
 

Make the cookie bar batter
  1. Preheat the oven and prepare a 9×13-inch pan by lining it with parchment, leaving an overhang for easy lifting.
  2. Whisk the dry ingredients (flour, corn starch, baking soda, salt) in a bowl.
  3. In a separate bowl, combine melted butter, both sugars, and vanilla until smooth; add eggs one at a time and blend until glossy.
  4. Fold in chocolate chips and 1 cup roughly chopped Cadbury Eggs, then press the dough evenly into the prepared pan.
Bake and cool the cookie bars
  1. Bake the pan until edges are golden and a toothpick in the center comes out with a few moist crumbs.
  2. Allow the bars to cool completely in the pan on a wire rack before frosting.
Prepare the frosting
  1. Beat room-temperature butter until creamy.
  2. Gradually add powdered sugar, vanilla, salt, and 2–3 tablespoons milk until you reach a spreadable consistency.
  3. Tint most of the frosting with blue food dye to a soft pastel hue.
  4. For the chocolate accent, mix cocoa powder with warm water to make a glossy paste and reserve a tablespoon.
Frost and garnish the Cadbury Egg Cookie Bars
  1. Spread the blue frosting in an even layer across the cooled bars.
  2. Pipe or drizzle the chocolate paste in short streaks for yolk-like accents.
  3. Press the remaining roughly chopped Cadbury Eggs into the frosting so they nestle without sliding.
Chill, slice, and serve
  1. Chill the frosted slab for at least 20–30 minutes to firm the frosting and make slicing clean.
  2. Use a sharp knife warmed under hot water and dried between cuts for neat squares.
  3. Serve at room temperature.

Notes

Store in an airtight container for up to 5 days. For longer storage, freeze unfrosted bars for up to 3 months.