Ingredients
Method
- Preheat oven to 350°F and grease a 9-inch baking pan.
- Cream butter, granulated sugar, and brown sugar until light and fluffy.
- Add eggs one at a time, then mix in vanilla extract.
- In a separate bowl, whisk flour, baking powder, baking soda, and salt.
- Gradually add dry ingredients into wet mixture until just combined.
- Fold in sour cream until batter is thick and smooth.
- Pour batter into prepared pan and spread evenly.
- Scatter chopped rhubarb evenly over the top.
- Bake for 45–50 minutes until golden and a toothpick comes out with moist crumbs.
- Cool slightly before slicing and serving.
Notes
Do not overmix or the cake will become dense. Sour cream is essential for moisture and texture. Best served the same day but improves in flavor after resting overnight.
