Hummingbird Cake

Ingredients

• 3/4 cup vegetable oil
• 1 1/2 teaspoons vanilla extract
• 1 teaspoon baking powder
• 1 cup pureed pineapple
• 1/2 cup finely chopped walnuts, plus more for the topping
• 1 cup mashed banana
• 1/2 cup unsalted butter, room temperature
• 4 oz cream cheese, room temperature
• 1/2 teaspoon baking soda
• 3 1/2 cups confectioner’s sugar
• 2 large eggs
• 1-2 tablespoons milk
• 2 1/2 cups all-purpose flour
• 1 1/2 cups light brown sugar
• 1/2 teaspoon salt
• zest from 1/2 lemon
• 1/2 teaspoon ground cinnamon