Prepare cupcakes by combining cake mix, buttermilk, vegetable oil, and eggs with an electric mixer. Once combined, scrape the bowl and mix on medium speed for two minutes. Place cupcake liners into pan(s) and divide batter evenly. Bake at 350° for 15-17 minutes, or until light golden brown. Remove from pan(s) to cool.

Prepare strawberry filling by combining orange juice and cornstarch in a saucepan. Add diced strawberries and sugar and cook over medium-high heat until boiling to dissolve the sugar.

Use a melon baller to scoop the center out of each cupcake. Fill each cupcake with about 1 Tablespoon of the strawberry mixture. Cover with whipped cream and garnish with a fresh strawberry. Serve immediately.