Banana Bread (Pan de Guineo)

3 very ripe bananas
1/2 cup sugar
1/2 cup (1 stick) butter
3 eggs
1/2 teaspoon salt
2 cups all-purpose flour
1 teaspoon baking powder combined with 2 tablespoons sour cream
butter to grease pan

Preheat the oven to 350 F.

In a large bowl, mash the bananas. Add the sugar, butter, and eggs. Beat until well blended.

In a separate bowl, sift the salt and flour together. Combine with the banana mixture. Add the baking powder-sour cream mix.

Grease an 8-inch pan and pour the batter into it. Bake for 30 minutes, or until a toothpick inserted in the center comes out clean.