Preheat your oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving an overhang on the sides so the bars are easy to lift out after baking.

In a large bowl, mix together the yellow cake mix, vanilla pudding powder, water, vegetable oil, and eggs until combined. The batter will be very thick.

Fold in the chocolate chips.

Transfer the dough to the prepared baking pan and press it into an even layer. Because the dough is thick, lightly wet the back of an offset spatula to help smooth it into the pan.

Press candy-covered chocolate eggs onto the top of the dough.

Bake for 22–25 minutes, or until the edges are set and a toothpick inserted in the center comes out mostly clean.

Allow the bars to cool completely in the pan before lifting them out using the parchment paper and slicing into squares.