Dark brown sugar and pecans add flavor, sweetness, and crunch to this Banana Pecan Coffeecake. It's like all that's delicious about banana and toffee rolled into one.
Store the coffeecake, covered, at room temperature for up to 3 days.
Note: The dark brown sugar lends a toffee flavor to this recipe. You can use other sweeteners, but the flavor nuances will change.