Ingredients
Instructions
- Batter: Cream together butter and sugar until smooth and creamy.
- Add egg and vanilla.
- Sift together dry ingredients and add to butter and sugar mixture 1/3 at a time, along with buttermilk.
- Toss rhubarb with 1 tbsp flour and fold into batter.
- Spoon batter into a greased 9 x 13 inch cake pan and smooth the surface.
- Topping: Blend together topping ingredients and sprinkle evenly over batter.
- Bake at 350F for 45 minutes or until cake has risen, browned and comes away from the edges, and skewer (or toothpick) inserted in the centre comes out clean.