Don't cook the muffins!
I make up muffin batter, but put it in to paper cups in the muffin pan and put the muffin pan in the freezer. When the batter is frozen, I take out the batter to get my pan back and put the frozen muffins in containers.
To cook, put the frozen muffins back in the pan and cook at the same temp +5 minutes. You don't even have to defrost. I got the directions directly from Joy of Cooking (the new one) and it works great. Otherwise I make up 12 muffins and they all get eaten by the two of us in one day.
My favorite muffin recipe (not vegan, but high in fiber)
3/4 cup whole wheat flour
3/4 cup white flour
2 tsp baking powder
1 1/2 tsp cinnamon
1 tsp baking soda
1/2 tsp salt
3/4 cup sugar
1/2 cup finely chopped apple, with peels on
5 tbs melted butter or oil
1/2 chopped pecans, optional
Mix the dry ingredients and set aside. Mix the eggs and sugar and stir the apples into the mix. Let apple-sugar-egg mix sit for 10 minutes, then stir into the dry ingredients, don't overmix. Add in the pecans (or walnuts). Makes 12 muffins. Cook at 400 F for 14 - 16 minutes or 19 - 21 minutes if frozen first.