Crumb Coffee Cake
  • -For Crumb Topping-
  • 2½ Tablespoons granulated sugar
  • 2½ Tablespoons packed brown sugar
  • ½ teaspoon ground cinnamon
  • 4 tablespoon salted butter, melted
  • ¾ cups all purpose flour (may need a little more)
  • -For The Cake-
  • 1¼ cups all purpose flour
  • ½ cup granulated sugar
  • ¼ teaspoon baking soda
  • pinch of salt
  • 6 tablespoons salted butter, softened
  • 1 egg
  • 1 egg yolk
  • ⅓ cup plain (or vanilla) yogurt or buttermilk
  • 1 teaspoon vanilla extract
  1. Make the crumb topping: combine sugars, cinnamon, melted butter, & flour; stir well. If your crumb topping is still too wet add a little more flour. You want it to be a consistency you can easily crumble between your fingers. Set aside.
  2. Preheat oven to 325. Grease an 8x8" baking dish.
  3. Using an electric mixer mix flour, sugar, salt, & baking soda together. Add butter & mix. Mixture will become crumbly looking & a little dry. Add egg, egg yolk, yogurt/buttermilk, & vanilla. Beat until light & fluffy.
  4. Pour mixture into greased baking pan using a rubber spatula to smooth it out.
  5. Add crumb topping by using your fingers to break apart the crumbs & sprinkle them over the batter. (Don't press them into the batter)
  6. Bake for 30-35 minutes, until toothpick inserted in center comes out clean.
  7. Let cool for 30 minutes