Don’t throw out those sad bananas – make muffins. This is the muffin version of Shirley’s Banana Bread.

For the batter:
1 ¾ cups flour
2 ½ teaspoons baking powder
½ teaspoon salt
1/2 cup unsalted butter or shortening
2/3 cup sugar
¾ teaspoon lemon zest (optional)
1 teaspoon vanilla (optional)
2 eggs
½ cup milk
1-1 ¼ cups banana (around 1-1 ½ bananas)

For the streusel:
¼ cup all purpose flour
¼ cup brown sugar
3 Tablespoons butter, room temperature

Preheat oven to 350 degrees. In a large bowl, mix sugar, butter and salt until light and fluffy. Incorporate eggs, one at a time, scraping down bowl after each addition. Mix in banana, zest and vanilla until mixture is smooth.

In a separate bowl, sift together flour and baking powder. Add one third of the flour and mix, then add half the milk. Repeat, and finish with remaining…