Slow Cooker candied yams

I just finish putting my sweet potatoes in the slow cooker with the help of my son. He likes helping me in the kitchen. I like eating sweet potato and I do not know how to cook it, until I found a recipe from the newspaper. Cook it in your slow cooker instead in the oven. I want to share the simple recipe here.

= ¼ cup soft butter
= 2 teaspoon vanilla extract
= 1 teaspoon salt
= 1 cup granulated sugar
= 1 cup brown sugar
= 4 pounds sweet potatoes peeled and thinly sliced.

Mix butter, vanilla, salt and both sugars in bowl.
Layer potatoes and sugar mixture in slow cooker, steering to coat potatoes well.

Cook on low 4 hours, or until potatoes are tender. Serve immediately.