1. Preheat oven to 350 degrees and line pans with cupcake liners.
2. Sift cake mix into a small bowl and set aside.
3. In a large bowl, combine eggs, butter, strawberry puree, milk, sour cream and vanilla extract.
4. Add cake mix and stir.
5. Fill cupcake liners 3/4 full and bake for 16-22 minutes or until an inserted knife comes out clean.
6. Cream Cheese Frosting: Beat butter and cream cheese for 2 minutes. Add vanilla and 3 cups powdered sugar. Beat well. Slowly add in more powdered sugar until you reach your desired consistency.
7. Pipe onto cooled cupcakes and top with strawberries.