Prepare your sweet potatoes to bake, and poke holes in each one, then line a cookie sheet with parchment paper. Lightly spray with cooking spray. Place your potatoes on the cookie sheet, and lightly brush with butter. Bake at 375°F for one hour, or until your potatoes are soft on the inside. Remove and allow to cool.
In a medium-size saucepan, combine water, lemon juice, granulated sugar, and brown sugar. Stir together. Over medium heat bring to a boil until sugars are dissolved.
To your saucepan, add butter, cinnamon, salt, nutmeg, cloves, and black pepper. Bring to a boil once again answer. Allow to boil for one minute then remove from the heat.
When your potatoes have cooled enough to handle, remove the peeling. Next, cut your potatoes into slices that are one ¼ to 1/3 inch thick. Arrange your sweet potato slices in a casserole dish that has been lightly greased. Drizzle your sauce on top of the arranged potatoes. Sprinkle raw sugar on top.
Place your arranged potatoes in the casserole dish back into the oven at 350°F and bake for 30 minutes. Serve and enjoy!