Classic Coffee Cake

Directions

1. 1
   Heat oven to 350 degrees F; coat 9-inch square baking pan with cooking spray.
2. 2
   For topping, in medium bowl, blend brown sugar, flour, cinnamon and salt.
3. 3
   With pastry blender, cut butter into flour mixture until crumbs form; chill.
4. 4
   For cake, (if not using buttermilk) pour vinegar into a measuring cup; add enough milk to equal 1 cup.
5. 5
   Set aside.
6. 6
   In medium bow, whisk together flour, baking powder, baking soda and salt.
7. 7
   In large bowl, beat butter, sugar and vanilla until fluffy, 2 minutes.
8. 8
   Add eggs, one at a time, beating well after each.
9. 9
   Working in batches, beat in milk mixture alternately with flour mixture.
10. 10
    Scrape batter into pan.
11. 11
    Sprinkle with topping.
12. 12
    Bake at 350 degrees for 1 hour, until a toothpick inserted into cake comes out clean.
13. 13
    Cool in pan on wire rack.
14. 14
    Dust with confectioners' sugar; cut in squares.
15. 15
    If you don't own a powdered sugar sifter, use a wire-mesh container or strainger to dust top of cake.