Here we are, week (too many to count) of the pandemic, and I think we are all still doing a lot of cooking. We are doing most of our grocery shopping online. It's not perfect, but there is a convenience factor that might keep me from going to grocery stores for mundane stuff even when we don't have to mask up, sterilize our carts, disinfect our hands, and get mad at people who can't seem to properly where a mask.

One other detail: Many muffin recipes call for vegetable oil (as I'm sure this one did from where I sourced it from). This works fine, but I like the taste of butter in my muffins. So the order you put the wet ingredients together is important. I usually melt the butter first (even before I get the remaining ingredients out) so it has a chance to cool down. Then it should go in after whisking the eggs and sugar (which you do to help give some volume) but before adding the bananas and milk. The butter will disperse in the egg and sugar mixture, and not clump up when adding the the cold ingredients.
Oat bran has been a bit more difficult to find in the store, I think because its out of fashion more than a pandemic issue. You can just use more flour, or substitute some oatmeal. The texture changes but they are still good. You can also do these with all whole wheat, all AP (white) flour, or what ever mixture you like (or have on hand). They will get more fluffy with all white flour. White whole wheat flour also works well.
Banana Bran Muffins
10 to 12 muffins
3/4 cup flour
1 ½ cups whole wheat flour
½ cup oat bran
2 teaspoons baking powder
½ teaspoon baking soda
¼ teaspoon salt
1 teaspoon ground cinnamon
1/8 teaspoon freshly grated nutmeg (optional)
2 eggs
½ cup un-packed brown sugar
¼ cup melted butter or vegetable oil
3 large ripe bananas, mashed
¼ cup yogurt, milk, or buttermilk
1 teaspoon vanilla extract (optional)
½ cup chopped walnuts or almonds, plus more for topping
Raw (coarse) sugar
OVEN: Preheat to 400F or 380F convection bake. Grease 12 muffin cups.
Whisk together flours, bran, baking powder, soda, salt, cinnamon and nutmeg in a small bowl.
Whisk eggs and sugar in a large bowl, then whisk in melted butter (or oil) and extract. Add mashed bananas, yogurt, extract and mix well. Bananas can be mashed in a separate bowl with a potato masher, with a potato ricer, or just squish them through your fingers into the bowl.
Scoop batter into muffin cups. If desired, place a nut halve on each muffin, and sprinkle with raw sugar. Fill any empty cups with 1/2" of water.
Bake for 20 to 25 minutes (18 minutes convection), or until brown and springy to the touch in the center. Turn out onto a rack to cool.