Step 1

Preheat the oven to 350 degrees F. Line two baking sheets with parchment paper and set aside.

Step 2

Stir together the cake mix, eggs, butter and 1/4 cup water in a large bowl with a wooden spoon or rubber spatula until smooth and combined. Stir in the chocolate and sprinkles until they are completely coated, then gently fold in the cornflakes and pretzels.

Step 3

Scoop the dough onto the lined baking sheets using a 2-ounce ice cream scoop or a large spoon, about 2 inches apart (6 per sheet). Bake, rotating and switching the positions of the baking sheets halfway through, until the cookies start to turn golden brown on top, 8 to 10 minutes Repeat with the remaining cookie dough.

Step 4

Let cool slightly and serve, or cool completely and store in an airtight container up to 5 days.