Batter kept in an air-tight container can be refrigerated up to 6 weeks, hence the title name.

Six Week Blueberry Bran Muffins

15 ounces bran flakes (approximately 11 1/4 cups)
5 cups all-purpose flour
3 cups granulated sugar
5 teaspoons baking soda
2 teaspoons salt
1 teaspoon ground cinnamon
4 cups buttermilk
4 large eggs
1 cup vegetable oil
2 cups fresh blueberries, rinsed

1. Preheat oven to 400°F (205°C).
2. In a large bowl combine together bran flakes, flour, sugar, baking soda, salt, and cinnamon. Add in buttermilk, eggs and oil; stir until moistened. Fold in blueberries.
3. Spoon into greased muffin tins and bake for 12 minutes or until a toothpick, when inserted in the center, comes out clean.

Makes 4 dozen muffins.