Pineapple sheet cake with cream cheese frosting (a.k.a. mexican fruit cake)

Ingredients

1) for cake:

• 2 cups flour
• 2 cups sugar
• 2tsp. baking soda
• 2 large eggs, beaten
• 1 large can crushed pineapple with juice (20 ounce)
• 1 tsp. vanilla
• 1/2 cup pecans or walnuts

2) Cream Cheese Frosting:

• 8 ounces cream cheese, room temperature
• 3 cups powdered sugar
• 1 stick butter, softened (1/2 cup)
• 1 tea spoon vanilla
• 1/2 cup chopped nuts