Tagalong Blondies are better than the original Girl Scout Cookies! A creamy peanut butter layer over a buttery Blondie, and finished off with chocolate.
In a large bowl or KitchenAid mixer, beat together the butter and brown sugar until smooth and creamy. Add in the eggs and vanilla, beat again until well incorporated and smooth.
Then add in the flour mixture a 1/2 cup at a time and beat after each addition until well incorporated, repeat until all of the flour is gone.
Bake in preheated oven for 23-25 minutes. Let the bars completely cool before adding the peanut butter layer.
In a small mixing bowl, mix together peanut butter and powdered sugar until it’s completely blended and smooth.