Eat every hour on the hour until you're at the weight you want. Just eat good things, like natural PB on a whole grain English muffin, stuff like that. Drink a gallon of whole milk per day. Blend in some protein powder.
Warning: your metabolism slows dramatically once you get into your 40s. If you get in the habit of eating a lot, you'll have trouble. Once you hit the mid-40s, you seriously have to cut the Kals.