I'm sorry I didn't get a better picture of this banana chocolate-chip cake because I am short-changing it. I've been eating this for as long as I can remember and it's delicious. When we were kids, my siblings and I had an unwritten rule to always leave two or three bananas in the fruit bowl to brown. Like magic, they'd turn into this cake.
I don't think I've made it since I moved out on my own over a decade ago. At a wedding recently, a friend of a friend came up to me. She'd been making this cake with what she'd just learned was my Mom's recipe, and was raving about it. Alas, my Mom can't take the credit either; it's from a Company's Coming cookbook, a popular line of Canadian cookbooks. I don't have the original recipe and it's possible there were a couple of modifications along the way, but here it is, as dictated to me!
Using a fork, mash 1 cup very ripe bananas (approximately 2-3) in a bowl. In a stand mixer, beat together 1/2 cup butter and 1-1/2 cups sugar. Add 2 eggs and 1 tsp vanilla and beat. Add mashed bananas and 1/3 cup Greek yogurt and beat.
In a separate bowl, sift together 2 cups flour, 1 tsp baking powder, 1 tsp baking soda and 1/2 tsp salt. Working in batches and with the mixer on low speed, add flour mixture and stir until just blended. Fold in 1-1/4 cups chocolate chips.