Preheat oven to 375°F (190°C). Grease or line a 12 cup muffin tin with paper liners.
In a large bowl, mix together Rogers Wheat Bran and buttermilk; let stand 5 minutes. Stir in vegetable oil, brown sugar, beaten egg, and vanilla.
In a separate bowl, whisk together flour, baking soda, baking powder and salt. Add to first mixture and stir until just blended. Gently stir in raisins or dates and spoon into prepared muffin tin. Bake 15-20 minutes. Transfer muffins to wire racks to cool.
Per Classic Bran Muffins
Nutrition information per muffin: 238 calories, 4 g protein, 8 g fat, 42 g carbohydrate, 5 g fibre, 20 mg cholesterol, 266 mg sodium.