Want to know what those holiday treats will cost you this season? Here's a calorie count on Thanksgiving's most common desserts:

450 POUND CAKE

People think it's low-cal because it's not frosted. They're wrong. This calorie count is about average for a good-size slice, like you'd find at a high-end coffee shop.

355 COOKIES

For three measly Tollhouse cookies, prepared according to the Nestle's bag!

350 PIE

For one skinny slice of sweet-potato pie - a mere 1/8 of a pie. If your mom slices generously, like my mom, double it to 700.

257 CHEESECAKE

Portion size matters! This count is for a slice that's 1/6th of a compact bakery cheesecake. One slice at the Cheesecake Factory: 710.

140 FRUIT CAKE

For a 1-ounce serving. But does anyone eat even that much? Fruit cake is actually a zero-calorie treat if you re-gift the whole tin to someone else!