6 Week Muffins

1 (15 oz.) pkg. raisin bran
5 cups flour
5 teaspoons baking soda
2 teaspoons salt
2 teaspoons allspice
3 cups sugar
4 eggs
1 cup vegetable oil
1 quart buttermilk
2 teaspoons vanilla

In a large bowl, add first 4 ingredients. Beat eggs, add oil,buttermilk and vanilla. Pour over cereal mixture. Stir well. Put batter in a plastic container with a tight fitting lid. Put date on container. Use 1/2 cup batter for each muffin. Bake in 375 degree oven for 20 minutes or until top springs up.