Quick Crumb Coffee Cake
Appears in Cook's Illustrated March/April 1995
The trick is to use the same mixture for both batter and topping.
WHY THIS RECIPE WORKS
The secret to our quick crumb coffee cake recipe was buttermilk, which thickened and enriched our batter. The batter itself had to be thoroughly beaten to aerate and emulsify the ingredients. A generous amount of crumb topping was the finis...