Yams recipe

**Ingredients**: - 4 large yams, peeled and cut into chunks - 1/2 cup unsalted butter - 1 cup brown sugar - 1/4 cup orange juice - 1 teaspoon ground cinnamon - 1/4 teaspoon ground nutmeg - 1/4 teaspoon ground ginger - 1 teaspoon vanilla extract - 1/4 teaspoon salt - Mini marshmallows (optional) 2.