Red Velvet Cake

Ingredients

• 4 Tablespoons flour
• 1 cup milk
• 1 cup sugar
• 1/2 cup butter
• 1/2 cup shortening
• 1 teaspoon vanilla
• 1/2 cup unsalted butter
• 1 (8 ounce) package cream cheese
• 2 cups chopped pecans
• 1 pound powdered sugar