Combine thawed strawberries and syrup ... set aside. Prepare cake batter according to package directions. ... over marshmallows. Spoon strawberry mixture evenly over batter. Bake ... 12 to 15 servings.
Cut 1 inch slice crosswise from top of cake, set aside. With sharp ... smooth. Stir in lemon juice and extract, mix well. ... of cake with strawberry mixture; replace top slice of ... and strawberries. Refrigerate leftovers.