In a large bowl, combine the flour, brown sugar, baking powder, cinnamon, baking soda and salt. In another bowl, combine the coffee, oil and egg. Stir into dry ingredients just until moistened.
Fill paper-lined muffin cups half full. Drop 1 teaspoon preserves into center of each muffin; cover with remaining batter. In a small bowl, combine the flour, brown sugar and cinnamon; cut in butter until crumbly. Stir in walnuts. Sprinkle over tops.
Bake at 400° for 18-20 minutes or until a toothpick inserted in muffin comes out clean. Cool for 5 minutes before removing from pan to a wire rack. Serve warm.