Step 1: Preheat Your Oven. Begin by preheating your oven to 350°F (175°C). This ensures that your Loaded Candy Cookie Bars bake evenly.
Step 2: Prepare Your Baking Pan. Line a 9x13-inch baking pan with parchment paper, leaving some overhang on the sides. This will make it easier to lift the bars out later.
Step 3: Mix the Dry Ingredients. In a medium bowl, whisk together the all-purpose flour, baking powder, and coarse salt. Set this mixture aside.
Step 4: Cream the Butter and Sugar. In a large mixing bowl, beat together the room temperature butter and packed light brown sugar until the mixture is light and fluffy. This usually takes about 2-3 minutes with a hand mixer.
Step 5: Add the Eggs and Vanilla. Add the eggs, one at a time, mixing well after each addition. Then stir in the pure vanilla extract until everything is well combined.
Step 6: Combine Wet and Dry Mixtures. Gradually add the dry ingredient mixture to the wet ingredients, mixing until just combined. Be careful not to overmix.
Step 7: Fold in the Goodies. Now it’s time to fold in the fun! Gently mix in 3/4 cup of the chopped Cadbury Mini Eggs, 3/4 cup of miniature marshmallows, 3/4 cup of dark chocolate chips, and 3/4 cup of coarsely chopped white chocolate. The dough will be thick and loaded with goodies!
Step 8: Spread and Bake. Spread the cookie dough evenly in your prepared baking pan. Bake for 25-30 minutes, or until the edges are golden brown and a toothpick inserted in the center comes out with a few moist crumbs.
Step 9: Cool and Cut. Once baked, remove the pan from the oven and allow it to cool in the pan for about 15 minutes. Then, using the parchment paper overhang, lift the bars out of the pan and let them cool completely on a wire rack. Once cool, cut into squares and enjoy!
