The next time you cook steel-cut oats in the GSO make extra for these muffins. The maple syrup and blueberries make them a sort of portable oatmeal breakfast. Keep a few in the freezer for those mornings when you want to grab something healthy as you head out for the day. Here in Arizona, a frozen muffin placed on the dashboard will defrost by the time it takes most people to commute to work.
Except for baking them in the GSO I made no changes to the original recipe. It makes 12 muffins. They can be baked together by separating the muffin pans with a rack and cross stacking them, or in two batches. Either way the baking time will be 25 to 30 minutes.