Preheat the oven to 350°F. Set out a 9 x 13-inch baking dish and spray generously with baking spray.: When you step into the kitchen you'll notice the warm oven glow soon after setting it to 350°F , and that steady heat is what creates a gentle rise and even crumb. Greasing the pan thoroughly prevents sticking and ensures neat slices, and using a baking spray with flour or a light coat of butter helps the cake release cleanly. If the pan has any residue the cake can adhere and tear when you invert it, so wipe it clean before greasing.
Set out a large mixing bowl. Combine the strawberry cake mix, vanilla pudding, eggs, oil, and milk. Whisk (or beat) until the batter is very smooth.: As you combine the dry and wet ingredients, watch the batter transform from a powdered blend into a glossy, pink ribbon like batter. The aroma of strawberry and vanilla will become more prominent as the pudding and cake mix hydrate. Mixing until the batter is very smooth eliminates lumps and ensures even crumb, but avoid overbeating which can tighten gluten and yield a tougher crumb. If you hear the mixer straining or see the batter pulling away from the bowl, stop mixing.
Pour the cake batter into the prepared pan. Bake for 25 to 30 minutes, until the center is puffed, and a toothpick inserted deep into the center of the cake comes out clean. Allow the cake to cool completely before continuing on.: While baking you'll notice the kitchen fill with a sweet, fragrant strawberry perfume and the top of the cake will develop a pale golden sheen. The center should be slightly springy and a toothpick should emerge mostly clean, a few moist crumbs are fine. Allowing the cake to cool completely is key so the frosting doesn't melt into the crumb; patience here prevents a soggy top. Avoid slicing or frosting while the cake is warm, as that causes frosting slippage.
For the Whipped Cream Cheese Frosting: Place the softened cream cheese in a clean mixing bowl. Add the powdered sugar, vanilla extract, and salt. Beat until well combined. Then turn on medium speed and slowly add the heavy cream to the cream cheese mixture. Once fully combined, turn the speed to high and beat until the heavy cream is whipped into a light, but firm, frosting.: Place the softened cream cheese in a clean mixing bowl. Add the powdered sugar, vanilla extract, and salt. Beat until well combined. Then turn on medium speed and slowly add the heavy cream to the cream cheese mixture. Once fully combined, turn the speed to high and beat until the heavy cream is whipped into a light, but firm, frosting : The bowl will become glossy as the powdered sugar dissolves into the softened cream cheese , and the scent will shift to a creamy, slightly tangy perfume. Adding the heavy cream slowly builds structure while preventing splatter; once it reaches firm peaks you will see ribbon like folds when you lift the beater. This texture is essential because it spreads easily and supports the crumble. If you overwhip you risk creating butter like separation, so stop as soon as you reach light firm peaks.
Scoop the whipped frosting over the cake and spread in an even layer.: Spreading the frosting is tactile and satisfying, the frosting should feel airy and silky under the spatula as you smooth it. Aim for an even layer so every slice has a balanced frosting to cake ratio, and use a light hand to avoid compressing the cake's crumb. If your frosting is too soft, chill it briefly before spreading to prevent sliding; if it is too stiff warm it slightly by letting it sit at room temperature for a few minutes.
For the Strawberry Crunch Crumble Topping: Place the Golden Oreos and freeze dried strawberries in a zip bag. Use a rolling pin to crush the cookies and strawberries into a fine crumb. Then drizzle melted butter into the crumbs and shake vigorously to create small crumbly chunks. Sprinkle the crumble topping over the frosting. I like to use it all, but you can use as much of the crumble topping as you like.: Place the Golden Oreos and freeze dried strawberries in a zip bag. Use a rolling pin to crush the cookies and strawberries into a fine crumb. Then drizzle melted butter into the crumbs and shake vigorously to create small crumbly chunks. Sprinkle the crumble topping over the frosting. I like to use it all, but you can use as much of the crumble topping as you like : Crushing the cookies and freeze dried strawberries releases a bright aroma and creates a variety of textures from powdery dust to small chunks. Drizzling in the melted butter and shaking helps form clusters that provide satisfying crunch. Sprinkle evenly so each slice gets a bit of the crunch, and if you prefer larger clusters reserve a few and press them gently onto the frosting. Beware of adding too much butter , which can make the crumble soggy if overdone.
Cover with plastic wrap and keep the cake at room temperature for up to 3 days, or refrigerate for up to a week. Cake tastes best at room temperature, so if refrigerating, allow the cake to rest at room temperature for at least 30 minutes before serving.: Resting the cake under plastic wrap protects it from drying out and keeps the frosting soft. At room temperature the cake's crumb and frosting meld into a perfect bite where textures are preserved, and chilling can firm the frosting for cleaner slices. If refrigerated, bring it to room temperature before serving to restore the creaminess of the frosting. Do not leave it uncovered, as it can develop a dry crust or absorb other fridge odors.