Preheat the oven to 350 degrees F, and line a muffin pan with 10 muffin or cupcake liners. (Optionally, you may grease the muffin pan.)
In a mixing bowl, mash the bananas well with a fork. Whisk in the eggs, oil, and honey.
Add the brown rice flour, cornstarch, baking powder, cinnamon, and salt. (Sometimes I mix the dry ingredients in a small bowl ahead of time; other times I just add them all to the wet ingredient bowl.) Stir until incorporated.
Stir in the raisins and nuts. Allow the batter to sit for approximately 15 minutes. (This will allow the brown rice flour to absorb more of the moisture, improving the texture of the finished product.)
Distribute the batter among the lined or greased muffins cups.
Bake for 18-22 minutes or until the muffins are just cooked through the center, taking care not to over-bake. (If you press down on the top and they feel slightly mushy, they need another couple of minutes.) Allow the muffins ro sit in the pan for five minutes, and then remove to a rack and cool completely,
Serve as is or with a little butter and/or honey. The muffins may sit, covered, on the counter for one day. After that, I recommend refrigerating for optimum freshness.