Coffee Cake


  • ¾ cup unsalted butter
  • 1 ½ cups packed light brown sugar
  • 2 ½ cups all-purpose flour
  • 1 teaspoon baking soda
  • 1 cup buttermilk or sour cream
  • 1 large egg, beaten
  • 1 teaspoon pure vanilla extract
  • ½ teaspoon salt


  1. Preheat oven to 350 degrees.
  2. Butter a 13x9 baking pan.
  3. In a large bowl, cut the butter in to the brown sugar and flour with a pastry blender or 2 knives until crumbly. Remove and reserve 1 cup of the mixture for topping.
  4. Beat the baking soda into the buttermilk or sour cream and add to the flour mixture.
  5. Add the egg, vanilla, and salt.
  6. Stir until smooth.
  7. Scrape the batter into the prepared pan, smooth the top.
  8. Sprink the reserved crumbs over the top.
  9. Bake the cake until golden brown, about 30 minutes.
  10. Cool to lukewarm on a wire rack.
  11. Cut into rectangles and serve warm.