I was thinking of the Carrot Cake cupcakes. I enjoy baking, and I treat horses as part of my family, and therefore, I often make treats, and every couple years make something special such as Carrot Cake cupcakes.
I grew up in UK. We cooked our own feed, bran mash is not overloaded with carbs or protein and can calm a hot headed horse. Oats are a bit too hot and play with horses head, but can be cooked, but if you add molasses, use very little. I have made the bran mash for years, but I was taught to cook the barley because it is easier to digest. Only takes about 1 hour to cook rolled barley (I add canola oil to water), the mix it with molasses. You want to watch how much sugar you give them especially if you are not riding regularly. I mix the barley with bran (wheat or rice) and general mineral supplement. Make sure mash is dry crumbly because bran is high fiber and can act like a laxative if too wet. Horse is less likely to founder or colic with this. Also keeps them well hydrated. When preparing for a show I would add a cup or 2 of oats for energy.