This is another recipe from Jessica Seinfeld's cookbook: Deceptively Delicious: Very yummy!
1 cup water
1/2 cup pureed sweet potatoes
1/4 teaspoon cinnamon
1 cup pancake mix
In a large bowl, mix the water, sweet potato puree, and cinnamon.
Coat a griddle with cooking spray and set it over medium-high heat.
When the pan is hot, spoon the batter onto the griddle, using 1/4 cup batter for each pancake.
Cook until bubbles form on top of the pancakes and the batter is set, 2-3 minutes.
Then use a spatula to flip the pancakes and cook them until golden brown on the other side, 2-3 minutes.