2 trays of sugar cookies overcooked today! Multi-tasking doesn't work!
That is a bummer!
I had the same trouble yesterday. I was halving a recipe, but I was reading the directions from the real recipe. I ended up shorting the butter and adding too much milk. Cakes turned out terrible - I had to rebake them. And it's all because I had other cakes in the oven that I was working with, etc.