Treacle = black strap molasses (invert sugar, but should still be close). That should be in Beersmith - just be careful with it, too much molasses can lead to a metallic taste IME.
Primary 1: Fauxtober Festbier
Primary 2: Open
Primary 3: Mistress Maggie (Irish Red)
Bottled: GB1, ESB, VNB, BBD, AZB, OOA
On Deck: Lith Keptinis, Burning the Midnight Oil RP, Traditional Kentucky Common - loving small batch brewing!