Cinnamon Coffee Cake

This coffee cake gets its tender crumb from buttermilk and just two tablespoons of oil, keeping it lighter than the butter-heavy versions you see everywhere. A mix of all-purpose and whole wheat flour adds a subtle nuttiness without making the cake dense.

The cinnamon-brown sugar topping goes in two layers: one-third gets sprinkled over the bottom half of the batter, then the rest of the batter goes on top, and the remaining topping finishes the surface. That middle layer creates a gooey cinnamon ribbon running through the center of the cake when you slice it.

The buttermilk and baking soda react together to give the batter lift and a slight tang that balances the sweetness of the brown sugar. It’s a simple, one-bowl cake with no mixer required.

Chef Tips

• Don’t skip the buttermilk. It’s doing double duty: tenderizing the crumb and reacting with the baking soda for rise. Regular milk won’t give the same result.
• Spread the batter gently over the middle cinnamon layer. Pressing too hard mixes the topping into the batter instead of keeping it as a distinct stripe.
• Check for doneness with a toothpick at 40 minutes. Every oven runs a little different, and the brown sugar can make the top look done while the center is still wet.
• Let the cake cool in the pan on a wire rack. Cutting too early crumbles the cinnamon layer.

Variations

• Streusel top: Mix flour, cold butter, and brown sugar into coarse crumbs and pile on top before baking for a crunchy streusel finish.
• Apple cinnamon: Layer thin apple slices over the middle cinnamon ribbon for a fruit-filled center.
• Pecan crunch: Add chopped pecans to the cinnamon-sugar topping for nutty texture in every bite.