The benefits of flax seed are many. They have the good omega-3 cholesterol's, they are high in fiber and are a powerful antioxidant. They help lower cholesterol and a good for developing brains. I have found a way to sneak a little into your baked goods. Use the seeds in your recipe at a 3 to 1 ratio in place of cooking fats. As an example if you have a 1/2 cup butter use 1 and a 1/2 cup ground flax seed. Or use 1/4 butter and 3/4 cup ground flax seed. Store flax seed in the freezer or fridge because it will go bad quickly at room temperature. It is also good to know that they brown more rapidly.
Here is a link to a Heart Healthy muffin recipe I make for me and my kids.