Decide your priority: closest sucanat flavor (brown/muscovado) vs drier texture (turbinado) vs adjustable sweetness (sugar + molasses).
Start with the listed ratio (use 1:1 for the brown-sugar and muscovado options).
If your substitute is wetter or stickier (brown sugar, honey, syrup), reduce added liquids slightly and watch batter/dough thickness.
If your substitute is drier or lighter (turbinado, granulated), expect faster browning but less molasses depth—bump bake time only if the center isn’t set.
Taste the batter/sauce after mixing and adjust: a tiny pinch of molasses for darkness or a pinch of salt to balance sweetness.