Step 1

Preheat oven to 350.

Step 2

In a mixing bowl, melt the butter. Mash in the bananas using a potato masher or wooden spoon. Stir in the sugar, vanilla, eggs and juice until well combined.

Step 3

Sprinkle the baking soda, baking powder and salt over the top, stir in. Mix in 1¼ cups of flour, and stir until combined. Batter will be lumpy.

Step 4

Toss the remaining ¼ cup flour with the blueberries and fold into the batter. Spray a jumbo muffin pan with cooking spray, or line with liners if desired. Use an ice cream scoop to fill the muffin cups ¾ full.

Step 5

Bake for 25-30 minutes, until a toothpick inserted comes out clean and the muffin tops are golden brown. Let cool slightly before removing from pan.