Long John Coffee Cake Recipe: Buttery Layers with Cinnamon Swirls

This coffee cake delivers buttery layers with a perfect cinnamon swirl in every bite. The texture strikes an ideal balance between soft, fluffy cake and rich, caramelized streusel topping.

I’ve refined this recipe to ensure those signature golden layers bake evenly, with a cinnamon-sugar filling that stays gooey and fragrant. It’s a timeless treat that’s as satisfying for breakfast as it is for dessert.

Ingredients for Long John Coffee Cake

These pantry staples and fridge essentials create those buttery, golden layers with perfect cinnamon swirls.

The butter is non-negotiable here—European-style unsalted from Plugrá or Kerrygold gives the richest flavor and highest fat content for those flaky layers. King Arthur Flour is ideal for all-purpose, but any unbleached variety works. The cinnamon should be freshly ground Ceylon if you can find it (look at Penzeys or specialty stores), but standard grocery store cassia is fine too. The brown sugar needs to be light and packed firmly for the streusel to caramelize properly.

No buttermilk? Stir 1 tbsp lemon juice or vinegar into regular milk and let sit 5 minutes. Sour cream can be swapped for Greek yogurt at equal amounts—same tang, slightly different texture. The walnuts are optional but add great crunch; pecans work equally well. If avoiding nuts entirely, increase the brown sugar in the streusel by 2 tbsp. The vanilla should always be pure extract, not imitation.

The cake keeps 3-4 days at room temperature in an airtight container. For longer storage, wrap slices individually and freeze for up to 3 months. The streusel topping softens as it sits, so serve within 24 hours for maximum crunch. Reheat slices briefly in a toaster oven to revive the texture.

Step-by-Step Instructions for Buttery Coffee Cake with Cinnamon Layers

Master the technique for perfect layers and swirls with this time-tested approach.

Step 1: Prepare the Streusel Topping and Cinnamon Filling

In a bowl, combine 0.75 cup light brown sugar, 1 cup all-purpose flour from the 3 cups, 1 tbsp ground cinnamon from the 2 tbsp, and 0.5 cup chopped walnuts.

Cut in 0.5 cup unsalted butter from the 1.5 cups until the mixture resembles coarse crumbs. This creates the textured topping. Reserve 1 tbsp ground cinnamon and 0.5 cup granulated sugar from the 1.5 cups for the swirl filling.

Step 2: Mix the Cake Batter

Cream the remaining 1 cup unsalted butter with the remaining 1 cup granulated sugar until light and fluffy. Beat in the 2 large eggs one at a time, then add the 1 tbsp vanilla extract.

In a separate bowl, whisk the remaining 2 cups all-purpose flour, 1 tbsp baking powder, 0.5 tsp baking soda, and 0.5 tsp salt. Alternate adding the dry ingredients, 1 cup buttermilk, and 0.5 cup sour cream to the butter mixture, beginning and ending with the dry ingredients.

Step 3: Assemble and Layer the Coffee Cake

Spread half of the batter into a greased 9×13-inch pan. Sprinkle the reserved cinnamon-sugar mixture evenly over the batter. Top with the remaining batter and spread gently to cover the filling completely.

Sprinkle the streusel topping evenly over the batter, pressing lightly to adhere. The layers will bake together, creating distinct swirls of cinnamon within the cake.

Step 4: Bake to Golden Perfection

Bake in a preheated 350°F oven for 40-45 minutes, or until a toothpick inserted into the center comes out clean. The top should be golden brown and the edges slightly pulled away from the pan.

If the top browns too quickly, tent loosely with foil. The cake is done when the center springs back lightly when touched and the streusel is crisp and fragrant.

Step 5: Cool and Serve

Allow the cake to cool in the pan for 15-20 minutes before slicing. This resting time helps the layers set and makes it easier to cut clean portions.

Serve warm or at room temperature. The cake will keep in an airtight container for up to 3 days, though it’s best enjoyed fresh on the first day when the streusel is at its crispiest.

Flavor Customization for These Flavors

Spiced Apple Addition

For a fall twist, fold 1 cup finely diced apple into the batter before assembling. I recommend Granny Smith for tartness that cuts through the sweetness. Toss the apples with 1 tsp cinnamon from your filling mixture first. 🌟

Chocolate Lovers

Add ½ cup mini chocolate chips to the streusel topping before baking. The chocolate melts into the brown sugar, creating pockets of gooey richness. For extra decadence, swap 1 tbsp of the flour in the batter for cocoa powder.

Citrus Zing

Brighten the flavors by adding 1 tbsp orange zest to the cake batter. The citrus works beautifully with the cinnamon, adding a fresh, aromatic note. I also brush the baked cake with 2 tbsp orange juice for extra moisture.

Nut-Free Version

Simply omit the walnuts and increase the brown sugar in the streusel by 2 tbsp. For extra crunch, add ½ cup rolled oats to the topping mixture. This maintains the texture without nuts.

Extra Cinnamon Swirl

Double the cinnamon-sugar filling for a more pronounced swirl. Mix ¼ cup granulated sugar with 1 tbsp cinnamon and sprinkle between the layers. This creates thicker, more defined cinnamon ribbons throughout. 💡

Brown Butter Upgrade

Brown the butter for the cake batter first—it adds a deep, nutty flavor. Melt 1 cup butter over medium heat until golden and nutty, then cool before creaming with sugar. This small step elevates the entire cake.

Frequently Asked Questions