A moist cake layered with fruit and streusel. It's perfect for celebrations or weekend munching.
Put the butter, canola oil, and sugar in a medium bowl. Beat them with an electric mixer or whisk until the mixture becomes light and fluffy (about 2 minutes with an electric mixer.) Add the sour cream and mix until combined. Then add the eggs, one at a time, beating well after each addition, and then vanilla. Sift in the dry ingredients and mix them in until just combined.