CDKitchen: Bars and Squares
Large collection of recipes including lemon bars, crispy treats, butterscotch squares, and a selection of chocolate and fruit bars as well.
Cooking for Engineers: Lemon Bars
Provides step by step instructions with photos and reader comments.
CooksRecipes.com: Bar Cookies
A collection of bar cookie recipes listed by category.
Filled bars and Squares Recipes
Large index of recipes including cinnamon apple, apricot, caramel pecan, and date squares, as well as cream cheese marble brownies, and chewy maple granola bars.
RecipeSource: Bar Cookie Recipes
Index of numerous diverse bar recipes.