Maple syrup replacement

[Mongolia]

I have been following a largely paleo diet which is grain free but have been including organic, full fat dairy. There are some really lovely recipes on the internet but they use maple syrup or honey in place of sugar. Theoretically better for you but still no good if you are diabetic! Does anyone know how to convert the amount of maple syrup used in a recipe into sweetener? Want to try sweet potato brownies http://makethebestofeverything.com/2014/08/sweet-potato-grain-free-brownies.html