• Preheat your oven to 350 degrees F.  Liberally spray a 13 x 9 pan with cooking spray.
• Pour melted butter in the bottom of the pan.  Sprinkle brown sugar evenly over butter.
• Arrange pineapple slices on top of brown sugar.  
• Place 2-3 cranberries in the middle of each pineapple slice and around pineapple slices.

Prepare the batter: 

• Beat together cake mix, pudding mix, nutmeg, cinnamon, eggs, sour cream, vegetable oil, pineapple juice and vanilla extract in a large bowl with a hand mixer on medium speed (or with a stand mixer using the paddle attachment).  
• Beat until smooth, about 1-½ to 2 minutes.
• Pour batter over pineapple slices and cranberries and spread evenly.
• Bake for 35-40 minutes, or until a toothpick inserted in the center is removed clean.
• Cool on a wire rack for 15 minutes and invert onto a serving platter.

Source: theblondcook.com