Chocolate Chip Banana Bread or Muffins (Optional: Cinnamon Streusel Topping)

1 Preheat oven to 350 degrees. Spray a 9x5 loaf pan with oil.
2 Using an electric mixer, combine butter & sugar.
3 Add in mashed banana, eggs, and vanilla extract. Mix until combined.
4 Pour in the flour, baking soda, cinnamon, and sea salt. Mix until incorporated, but don’t over mix. 
5  Pour in the chocolate chips, and fold in with a wooden spoon.
For a loaf:
1 Pour banana bread mixture into your loaf pan. Top with extra chocolate chips, if using. Bake for 50-55 minutes. Around 35 minutes, check bread & cover with foil so doesn’t get too browned. Let cool, & enjoy!
For muffins:
1 Pour banana bread mixture into 12 sprayed regular sized muffins tins. You can make a plain batter and top some with chocolate and leave the others without. Up to you! Bake for 20-30 minutes until a toothpick comes out clean. 
For Streusel (on loaf or muffins):
1 To make the streusel, add all ingredients together and mix until they form a mixture that sticks together. I added the streusel in replacement of chocolate chips.
2 Crumble the streusel up over the the muffins or loaf. Bake as noted above. Adds the best crunch and additional little sweetness. It's a game changer! Enjoy!