Using AI to halve a cake recipe: what needs checking?

You might want cake tonight without wanting a whole cake sitting in the kitchen all week. I like the idea of asking an AI assistant to help shrink a recipe you already enjoy, rather than asking it to invent a new one. King Arthur Baking’s existing guide to reducing recipes recommends choosing an appropriate pan, working with ingredient weights and writing down the reduced amounts before starting. It also explains how to divide a whisked egg by weight. Baking time needs its own attention: there is no fixed calculation that tells you exactly when a smaller bake will be done. I would give the assistant the original recipe and the dimensions of the pans I actually own. Ask for a side-by-side ingredient list, the reason for its pan suggestion and the original recipe’s signs of doneness. Check the arithmetic with a calculator before getting the bowls out. “Half the ingredients” should not quietly become “half the oven time.” If the pan choice gets complicated, I would look for a tested small-batch recipe instead. I want a pleasant bit of baking, not an evening spent arguing with a chatbot about batter. This is a way I would try using an assistant, not a recipe conversion I have tested. Would you use AI for the smaller-batch prep, or is this a job a recipe card and calculator already handle well enough?