Bran Muffins with Banana and Blueberries

Name: Bran Muffins with Banana and Blueberries
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Cuisine: American
Ingredients: 2 bananas (ripe); 1/4 cup milk (see notes below); 1/4 cup canola oil (see notes below); 1/2 cup maple syrup (see notes below); 1 large egg; 1 tsp vanilla; 1 1/2 cup wheat bran (see notes below); 1 cup all purpose flour; 1 tsp baking powder; 1/2 tsp baking soda; 1 tsp cinnamon; 1 tsp ground ginger; 1 tsp ground cloves; 1 tsp salt; 1/2 cup walnuts (finely chopped, see notes below); 1 cup blueberries (fresh or frozen, see notes below)