This Strawberry Shortcake Trifle layers white chocolate-studded cake bites, creamy vanilla filling, and fresh strawberries for a dessert that’s easy to make and always a hit!
Line a 9x13-inch metal pan with parchment paper, leaving an overhang for easy removal. Lightly coat parchment paper with cooking spray. If not using parchment paper, grease the pan with cooking spray. Preheat oven to 350°F.
In a large bowl, whisk eggs with a fork. Add sour cream, oil, and vanilla extract. Stir until completely combined. Add cake mix, vanilla pudding mix, and coarsely chopped white chocolate chips. Stir well. Add buttermilk (or water) and mix until just combined. Pour the batter into the prepared pan and bake according to package directions for a 9x13-inch pan. Test that the cake is finished by inserting a toothpick into the center; if it comes out dry or with moist crumbs, the cake is finished. Allow cake to cool in the pan, preferably overnight. (Cover the cooled cake with plastic wrap and let it sit out overnight.) Once ready to use, cut the cake into 1-inch cubes and use a metal spatula to remove cubes from the pan.
Sugared Strawberries
Remove the tops and stems of the strawberries, thinly slice, and add to a large bowl. Top with the sugar (less if you’re using sweet strawberries) and stir gently to combine. Let stand at room temperature for 30 minutes, tossing at least once or twice more. Drain off any accumulated liquid before adding strawberries to the trifle.
Cream Layer
Add heavy cream, powdered sugar, and vanilla to a stand mixer fitted with the whisk attachment. Whisk on low speed to combine. Gradually increase to high speed until medium-to-stiff peaks form, about 2–4 minutes. Watch carefully to avoid overbeating. In a separate large bowl, mix together sweetened condensed milk and 1% milk. With a hand mixer, mix in the pudding mix until combined. With a spatula, gently fold the whipped cream into the condensed milk and pudding mixture. Fold until smooth and combined.
Place about 1/3 of cake pieces in the bottom of the trifle dish. Cover with 1/3 of the cream and then 1 layer of 1/3 of the strawberries. Repeat the layers: cake, cream, strawberries. Repeat the layers one last time: cake, cream, strawberries. Serve immediately. If desired, garnish with fresh mint.
Notes
Make Ahead: I recommend serving the trifle right after it’s been assembled. Here’s how to make the components of the trifle ahead of time:
Wash the strawberries a few hours or up to a day in advance. Dry thoroughly, then store in the fridge. An hour before serving, add in the sugar and let the strawberries stand at room temperature.
Prepare the cake up to 2 days in advance. Cut into 1-inch pieces and store in an airtight container at room temperature until ready to use.
Prepare the cream filling a few hours in advance. Store in an airtight container in the fridge. It does thicken a lot as it sits; this is totally fine, and it will taste the same!
With all the components prepared ahead of time, assembly goes quickly—especially if you can grab a couple helpers as you’re putting it together!
Storage: To store leftover Strawberry Shortcake Trifle, cover tightly or transfer to an airtight container and refrigerate for up to 2 days. Add fresh strawberries before serving if desired.