Ingredients:
For the Cake:

1 cup (2 sticks) unsalted butter, softened
2 cups granulated sugar
4 large eggs
1 teaspoon vanilla extract
2 cups all-purpose flour
1/2 teaspoon baking powder
1/2 teaspoon baking soda
1/4 teaspoon salt
1 cup mashed ripe bananas (about 2-3 medium bananas)
1 cup sour cream
For the Banana Pudding Swirl:

1 box (3.4 oz) instant banana pudding mix
1 cup milk
For the Glaze (Optional):

1 cup powdered sugar
2 tablespoons milk
1/2 teaspoon vanilla extract
Directions:
Prepare the Oven and Pan:

Preheat your oven to 350°F (175°C).
Grease and flour a 10-inch Bundt pan or a 9×13-inch baking dish.
Make the Cake Batter:

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