Strawberry Whipped Cream Cake is a sheet cake filled with a creamy, milky filling, and topped with a homemade whipped cream and fresh sliced strawberries.
Preheat your oven to 350°F. Prepare a 9x13-inch baking dish with cooking spray.
In a large mixing bowl, combine (1) 13.25-ounce box of white cake mix, 1 cup of whole milk, ½ cup (1 stick) of melted unsalted butter, and 4 egg whites. Mix with a hand or stand mixer for 2 minutes until smooth and well combined.
Pour the batter into your prepared baking dish and bake according to the box directions—about 20–30 minutes, or until a cake tester or toothpick inserted in the center comes out clean.
Let the cake cool for 15 minutes (it should still be warm, not hot).
For the Cake Filling
While the cake is slightly cooling, whisk together (1) 12-ounce can of evaporated milk, (1) 14-ounce can of sweetened condensed milk, and ¼ cup of half and half in a medium bowl or large measuring cup until thoroughly combined.
Using a skewer, fork, or the handle of a wooden spoon, poke holes all over the cake—go deep so the milk mixture soaks in well. Slowly pour the tres leches mixture over the entire surface of the cake. It’ll look like a lot, but the cake will soak it up!
Cover the cake and refrigerate it for at least 4 hours, or overnight if you have time. The longer it chills, the better the texture and flavor will be.
For the Cake Topping
Right before serving, use a hand or stand mixer to whip 2 cups of heavy whipping cream, ⅓ cup of powdered sugar, and 1 teaspoon of pure vanilla extract until stiff peaks form.
Spread the whipped cream evenly over the chilled cake. Top with fresh sliced strawberries just before serving.
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Notes
Be patient when pouring the milk mixture—do it slowly and give the cake a few minutes to soak in between pours if needed.Store, covered, in the refrigerator for up to 3 days.