Join Claire Saffitz as she bakes the ultimate yeasted sour cherry coffee cake layered with a buttery streusel topping and tangy-sweet cherry filling. This cozy homemade coffee cake combines frozen sour cherries, Kerrygold butter, and a tender yeast-raised dough for an elevated twist on a classic. Perfect for breakfast, brunch, or dessert, this cherry streusel cake recipe is rich, flavorful, and surprisingly easy to make. Claire walks you step-by-step: proofing yeast in warm milk, mixing a soft enriched dough with eggs and sugar, macerating and reducing sour cherries with lemon zest and juice, and finishing with a crisp, cinnamon-spiced streusel topping. If you love coffee cake recipes, sour cherry desserts, or Kerrygold butter bakes, this one's for you.