Recipe(tried): Oatmeal Muffins using sour milk`

John - What a great tale. Grandmother memories warm my heart. I hope this recipe helps.
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Oatmeal Muffins
Makes 12 muffins

1 cup quick-cooking oats
1 cup sour milk
1 egg
1/2 cup brown sugar
1/2 cup melted shortening
1 cup flour
1/2 teaspoon salt
1 teaspoon baking powder
1/2 teaspoon soda

Soak oatmeal in sour milk 1 hour; add egg and beat well. Add sugar and mix. Add cooled shortening. Add flour sifted with salt, baking powder and soda. Bake in greased muffin pans in hot oven (400 degrees) 15 to 20 minutes.