Preheat oven to 375 degrees Fahrenheit. Mash sweet potatoes with hand held masher or mixer, depending on preference. Add 3 tbsp of softened butter, 3 tbsp brown sugar, 1/2 teaspoon of vanilla extract, 1/4 nutmeg, 1/4 teaspoon of cinnamon, 1/4 teaspoon of all spice, 1/4 teaspoon of salt. **NOTE** Spices are to taste, you may add more or less depending on your palette.