Banana Chocolate Chip Muffins

Originally from here - I've modified quite a bit.

3/4 c. white sugar
6 tbsp butter/oil - I use olive oil.
6 tbsp ground flax
1 tsp vanilla extract -- I left out because I added protein powder instead.
2 eggs
1 1/2 cups whole wheat flour
2 scoops vanilla protein powder (I use this since it's dairy free.)
1 tsp salt
1 tsp baking soda
3 ripe bananas
3/4 c. chocolate chips
1/2 c. chopped walnuts (optional)

Blend sugar, oil, flax, eggs, vanilla until smooth and creamy.

Add protein powder and bananas and blend until bananas are mashed.

Add flour, salt, baking soda. Mix until combined. Add chocolate chips.

Bake at 350. Mini muffins took about 15 mins. Regular sized muffin cups took about 20.