Step 1: Preheat and Prepare Start by preheating your oven to 350°F (175°C). Grease a 9×13 inch baking pan to ensure the cake doesn’t stick. While the oven heats up, chop your rhubarb and measure out all ingredients to keep things organized.

Step 2: Mix the Batter In a large bowl, beat together the eggs, sugar, baking soda, salt, flour, and sour cream using an electric mixer until smooth. This creates a base that’s light and airy for your coffee cake with rhubarb.

Step 3: Add the Rhubarb Gently fold in the rhubarb to the batter, making sure it’s evenly distributed. If you’re using frozen rhubarb, remember to thaw and drain it well first, as per the tips from experienced bakers.

Step 4: Prepare the Topping In a medium bowl, combine the sugar, flour, and cinnamon. Cut in the cold butter until the mixture resembles coarse crumbs. This streusel topping adds the perfect crunch to your moist rhubarb coffee cake with streusel topping.

Step 5: Bake and Cool Pour the batter into the prepared pan and sprinkle the crumb topping evenly over it. Bake for 45-50 minutes, or until a toothpick inserted into the center comes out clean. Let it cool completely on a wire rack before serving, which helps with slicing and enjoying the full flavors.