- 1 cup raisins
- 1 cup water
- 2 cups rolled oats
- 1 cup bran cereal (such as Kellogg's® All-Bran®)
- 1 cup whole wheat flour
- 3/4 cup white sugar
- 1 teaspoon salt
- 1 teaspoon baking soda
- 1 cup milk
- 1 1/2 teaspoons lemon juice
- 1 egg
- Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9×13-inch loaf pan.
- Bring raisins and water to a boil in a small saucepan, reduce heat to medium, and boil 5 minutes; set aside to cool.
- Mix rolled oats, bran cereal, whole wheat flour, sugar, and salt in a bowl. Mix milk with lemon juice in a small bowl and let stand 1 or 2 minutes to sour. Stir baking soda into sour milk until dissolved. Pour milk mixture into dry ingredients; beat egg into the mixture. Stir raisins and their liquid into the batter. Pour batter into prepared pan.
- Bake in the preheated oven until a toothpick inserted into the middle comes out clean, about 1 hour. Cool in pan for 15 minutes before removing to finish cooling on a wire rack.