Strawberry Rhubarb Crumb Cake

"Fresh rhubarb and strawberries in a dense, sweet cake. This is a classic, dense crumb cake. Sour cream adds richness and softens the texture, creating a dense, fine crumb, “like a muffin, but big.” Yes, kinda like that. You can use a full-fat greek yogurt in place of the sour cream if you want. I haven’t tried that with this particular recipe. If you used a 0% fat yogurt you will give up some of that richness. A recipe by The In Fine Balance Food Blog."

Cooking Vessel Size12 x 9 cake pan