Mother-in-law Susan makes these 3 ingredient lifesavers for every school bake sale. I finally got her secret and the whole pan vanishes instantly.

blondies cool for at least 20 minutes before slicing into squares and serving.

Variations & Tips

For cleaner slices: Let the blondies cool completely before cutting, and wipe the knife between slices. Chilling the pan briefly also helps if you want very neat squares for a bake sale tray.

Choose the right peanut butter: Regular creamy peanut butter gives the most reliable texture here. Natural peanut butter can work, but if it is very oily or separated, the bars may turn out denser or greasier.

Adjust the bake time: If