Sweet Potatoes in Orange Cups

2 cups cooked sweet potatoes
3 large navel oranges
1/4 cup butter
1/4 cup granulated sugar
1/2 cup milk
1/4 cup bourbon or 1 teaspoon vanilla extract
1/2 teaspoon salt
1/2 cup chopped pecans
Miniature marshmallows

Cover sweet potatoes with cold water. Boil until tender. Peel and cube. Halve oranges and remove pulp with spoon; flute edges with sharp knife. Cream butter and sugar together. Add cooked sweet potatoes, milk, bourbon or vanilla extract and salt. Beat until fluffy. Add chopped pecans. Fill orange cups right before serving and place marshmallows on top. Place on baking sheet and brown under broiler. Serve while hot.