Preheat your oven to 350°F and line a 12-cup muffin tin with cupcake liners.
In bowl, whisk together cake flour, granulated sugar, baking powder, baking soda, and salt.
In a separate bowl, combine buttermilk, milk, vanilla extract, almond extract, vegetable oil, whole egg, and egg white. Mix well.
Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix.
Divide the batter evenly among the cupcake liners, filling each about two-thirds full.
Bake for 20-22 minutes, or until a toothpick inserted into the center comes out clean. Allow cupcakes to cool completely.
While cupcakes are cooling, prepare the whipped cream by beating the chilled heavy whipping cream with the instant vanilla pudding powder until stiff peaks form.
Fold in the diced strawberries and strawberry jam gently into the whipped cream.
Once cupcakes are cool, cut a small hole in the center of each cupcake and fill with a spoonful of the strawberry whipped cream mixture.
Pipe the remaining whipped cream on top of the cupcakes and garnish with sliced strawberries.