I got this recipe from the gluten free forum on celiac.com; Liz (aka lonewolf) posted it. I know it sounds weird, but trust me, these rolls are FANTASTIC!
1 large egg
2 Tbs. brown rice flour or sorghum flour
1 Tbs. almond meal
1 Tbs. golden flax meal
1/2 tsp. baking powder
3/4 tsp. sugar (or one packet Splenda)
1/2 tsp. cocoa powder
shake of salt
Spray a custard dish (or any baking dish that will yield a hamburger bun sized "loaf") with non-stick spray. Crack egg into dish and stir with a fork until it's well mixed. Add all other ingredients and stir well. Cook in microwave on high for 90 seconds. You may have to loosen around the edges with a butter knife. The result is dense but reminds me a little of whole wheat bread. It is fairly low carb, especially made with sorghum flour.
NOTE: best dish to cook in is a 6-inch cereal bowl or soup mug with fairly straight sides. If you mix up about 8 servings worth or more of the mix in a Ziploc bag, you can make this quickly with one egg and 1/4 C of bun mix per bun. Makes a good sandwich roll!