For pregnant women, the best snacks -- like this one -- combine things from at least two food groups.
With protein, fiber, and healthy fats, you'll stay full between meals. Spread 1 or 2 tablespoons of peanut butter onto sliced apples and whole-grain crackers. Choose natural instead of regular peanut butter, which has unhealthy hydrogenated oil. Try different combos of nut butter (almond, cashew) and fruit (pears, bananas), too.