Greek Yogurt Coffee Cake Recipe – Moist & Tangy

The first thing you notice is the crackled, golden streusel — cinnamon and walnuts toasted into a crunchy crown. Break through it with a fork, and the cake beneath gives way with a tender, almost velvety crumb. This is not a dry coffee cake. It’s moist, with a subtle tang that cuts through the sweetness, and it stays that way for days.

Greek yogurt is the key. It replaces some of the butter and milk, adding richness without heaviness. The acidity tenderizes the gluten, giving you a finer, more even crumb. And because Greek yogurt is thicker than sour cream, it holds the batter together beautifully, so the cake bakes up with a nice dome and a soft center.

The Ratio That Makes It Work

I keep the ratio at 1:1 yogurt to flour by weight — that’s 1 cup (about 240g) of Greek yogurt for every 1 1/2 cups (180g) of flour. This gives you enough moisture to keep the cake tender without making it heavy. The yogurt also lets me cut the butter to just 1/2 cup, so the cake isn’t greasy. The result is a coffee cake that feels substantial but not dense, with a clean, bright finish.

Streusel That Stays Crunchy

The streusel is a simple 1:1:1 ratio of flour, brown sugar, and cold butter by volume, with cinnamon and walnuts. The trick is to use cold butter and work it in until the mixture looks like coarse sand with a few pea-sized pieces. Those larger bits melt into crunchy clusters during baking. I always add the nuts — they toast in the oven and add texture that contrasts with the soft cake. If you skip them, the streusel will be more crumbly and less interesting.