1 (8 ounce) can frozen orange juice concentrate
1/4 cup hot water
1/4 cup sweetened orange juice concentrate
1 teaspoon vanilla extract
1 cup all-purpose flour
1 egg
2 teaspoons baking powder
1 teaspoon salt
1 cup chopped marshmallows
2 tablespoons lemon juice
1/4 cup lemon zest
1/2 cup milk
Preheat oven to 350 degrees F (175 degrees C). Grease muffin cups or line with paper muffin liners.
In a medium bowl, mix orange juice concentrate, hot water, orange juice concentrate, lemon juice concentrate and lemon zest. Stir into muffin batter. Pour or spoon the orange mixture, and marshmallows into muffin cups.
Bake in preheated oven for 20 minutes. Immediately remove muffins from oven and cool briefly on a wire rack. Unwrap muffins and cool completely. Microwave marshmallows in microwave for 30 seconds, stirring after each microwave minute. Return muffins to oven. Bake an additional 10 to 15 minutes, until a deep golden brown.
Meanwhile, in a large bowl, mix flour, baking powder, salt, lemon juice and lemon zest. Stir into orange juice mixture, then stir in egg, marshmallows and lemon zest. Stir all together thoroughly. Spoon marshmallows into muffin cups. Fill each cup with 1/2 cup milled lemon filling and drizzle orange marinade over all.
Bake in preheated oven for 45 to 60 minutes, or until a wooden toothpick inserted into center of each muffin comes out clean.