A UK variant of these could be done with syrup waffles and the toffee condensed milk I think. These easy caramel and chocolate layered cracker toffee bars are a twist on a traditional cracker toffee.
Martha Stewart Kitchen Measurement Guides - Baking Pan Measurements, Measuring Equivalents and Candy Making Temperatures. This is a handy reference to print and laminate.
Crumb cake, a essayer