Preheat the oven to 350 degrees.
Spray two regular loaf pans or 3 to 4 mini loaf pans with nonstick cooking spray.
Mix the dry ingredients in a large bowl. Set aside.
3 cups all purpose flour, 1 teaspoon baking soda, 1 teaspoon ground cinnamon, 1 teaspoon salt, 2 cups granulated sugar
In a seperate bowl, beat the eggs.
3 large eggs
Add the vegetable oil, vanilla extract, pineapple, and banana to the bowl with the eggs until blended.
1 ¼ cup vegetable oil, 2 teaspoons vanilla extract, 1 8 ounce can crushed pineapple, drained, 2 cups mashed ripe bananas
Add the dry ingredients and stir just until combined.
Divide the batter between the prepared baking pans.
Bake for 60 to 65 minutes or until a toothpick inserted in the center returns clean.
Cool in the pans for 5 to 10 minutes before removing to continue cooling on a wire rack.