Spray your knife with cooking spray before cutting the bars to prevent the gooey marshmallows from sticking to it.
Do you like butterscotch, white chocolate or peanut butter? Consider adding those varieties of baking chips – either in place of the chocolate chips, or sprinkle a handful of your favorite variety along with the chocolate chips.
Like caramel or chocolate sauce? Drizzle bars with your favorite sauce before serving.
Love white chocolate or want to keep this dessert all white for a bridal shower or special event? Use sugar cookie dough or white chocolate- or white yogurt-covered pretzels and white vanilla chips.