Have you ever thought of using grainless bread, also known as paleo bread... They use either coconut or almonds to make it, and has 6 carbohydrates and 5 grams of fiber per slice. I love using this bread, there is no yeast, and no grains. Its high in fiber and protein and very versatile. I usually get mine from Hy-Vee grocery stores, but you can also buy it from their website at Julianbakery.com .