We have a secret blackberry patch near the golf course, so I turned this Betty Crocker blueberry recipe into a blackberry one. Best thing besides eating them straight from the patch. Cinnamon Streusel Topping 1/4 cup all-purpose or whole wheat flour 2 tablespoons packed brown sugar 1/4 teaspoon ground cinnamon 2 tablespoons firm butter Muffins 1 cup milk 1/4 cup vegetable oil 1/2 teaspoon vanilla 1 egg 2 cups all-purpose or whole wheat flour 1/3 cup granulated sugar 3 teaspoons baking powder 1/2 teaspoon salt 1 cup fresh blackberries or blueberries 1. Heat oven to 400°F. Line 12 regular-size muffin cups with paper baking cups. In medium bowl, mix 1/4 cup flour, the brown sugar and cinnamon. Cut in butter, using pastry blender (or pulling 2 table knives through ingredients in opposite directions), until crumbly. 2. In large bowl, beat milk, oil, vanilla and egg until well blended. Stir in 2 cups flour, the granulated sugar, baking powder and salt all at once just until flour is moistene...