Recipe: (nearly) Guilt-Free Peach Cobbler

As soon as I get on a weight-loss-lifestyle-change kick, I'm searching for ways to "cheat" without it showing up on my scale. It's just who I am (and I don't think I'm all alone)! I found a cool recipe online at Living A Changed Life. She made a berry cobbler and I figured I could do the same with peaches. I added my own pizazz to it and this is how it goes. 
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Ingredients needed: Bag of frozen peaches, Sprite Zero, white/yellow cake mix, brown sugar, cinnamon. 

1. Gather up your ingredients. 2. Spread frozen peaches on a greased baking pan. 3. Sprinkle brown sugar on top. 
4. Add cake mix evenly. 5. Sprinkle cinnamon on top. 6. Evenly add 1.5 cups (or 1 can) of Sprite Zero. 
Bake at 350 degrees for 40 minutes. Let it cool for a while and serve warm.
As with any "diet" and "cheat" food, be aware: this is NOT going to taste like your grandmother's Christmas cobbler. It's not. This is a low-calorie replacement to something that may otherwise make you gain 2 pounds just from sniffing it. 
Let me do some math here and see what kind of calories this is going to cost you.
1 box cake mix: 1600, 12 oz. Sprite Zero 0, 3 cups peaches: 150, 3 tbs. brown sugar: 100, 1 tsp. cinnamon sugar: 50.

Add it up and the entire pan is 1,900 calories. Don't eat all of the pan in one sitting, of course! I divided my pan 
into 12 servings, meaning each one is 158 calories. You can walk that off on the treadmill in less than 30 minutes :)
I put this recipe through the ultimate taste-test, my husband. He is a peach-cobbler LOVER. I didn't tell him any of my diet-ingredients, but he guessed the cake mix...the smell gave it away. He liked it a lot. It's definitely not one of Janesa's (our friend from college & his track teammate) cobblers, but good nonetheless. His only critique was that it tasted more like a cake-with-peaches, not "cobbler." But, he's a pretty critical tester + he doesn't know what it's like to be on a diet!