Melissa's Mandarin Orange Cake Recipe - Priesters Pecans

Ingredients

• 1 (18.25-oz.) package orange or pineapple flavor cake mix
• 1/2 cup vegetable oil
• 4 eggs
• 1 (11-oz.) can mandarin oranges with juice
• 1 (15-1/4-oz.) can crushed pineapple
• 1 (16-oz.) carton whipped topping
• 1 (3.4-oz.) box vanilla instant pudding mix
• 1 cup pecans, chopped
• Pecan halves to decorate (optional)
• Extra mandarin orange slices to decorate (optional)