Preheat oven to 350 degrees F.
Grease a 9" loaf pan with canola oil and line with parchment paper and set aside.
In a medium sized bowl, mix in dry ingredients using a wire whisk and set aside.
In large electric mixing bowl, whisk together the butter and ¾ cup of the brown sugar until blended. Whisk in the eggs, yogurt, and vanilla until combined.
Add in the dry ingredients and mix 5-6 times until gently mix and then remove bowl from the stand mixer and fold in mashed banana using a spatula. Make sure to scrape the sides
Batter should be thick and clumpy but do not over mix since it will make your bread tough.
Spread the batter into the prepared pan.
Bake the bread for 30 minutes, then tent the bread with foil (which helps prevent the crust from burning and top + sides from cooking too quickly) very loosely. Continue baking for an additional 30 minutes.
Drizzle butter and sugar mixture on top.
Allow the bread to cool completely before cutting into slices.