Preheat the oven to 350 degrees F. Spray a 9 x 13 inch pan with nonstick spray.: You will smell a faint warmth as the oven comes up to temperature, and the air will feel drier which helps initiate even baking. Preheating ensures the cake batter begins to rise immediately when it hits heat, creating uniform structure. A common error is placing the pan in a not fully heated oven, which can produce uneven rise and dense centers. Ensure racks are centered for balanced heat distribution.
In a large bowl, use an electric mixer to combine the sugar and butter until well blended. Add the eggs and mix well.: As you cream the butter and sugar , you should see the mixture become paler and slightly fluffy, a sign that air is incorporated for lift. When you add the eggs , the mixture becomes silkier and the beaters will glide more smoothly. This step builds the cake's base structure and sweetness profile. Avoid adding eggs one into the mixture while the butter is too cold, which can cause curdling and reduce rise.
In a separate bowl, whisk together the dry ingredients: flour, baking powder, baking soda, cinnamon, salt and cloves. In another bowl, combine the mashed strawberries, buttermilk and vanilla.: flour, baking powder, baking soda, cinnamon, salt and cloves. In another bowl, combine the mashed strawberries, buttermilk and vanilla. : Whisking the dry ingredients removes lumps and evenly distributes the leaveners so the cake rises uniformly. The dry mix will smell of warm spice. In the wet bowl the mashed strawberries will give off a bright, fruity aroma and the buttermilk will thin the fruit into a creamy slurry. Mixing separately avoids overworking the batter and keeps the chemical reactions controlled. A mistake is to dump everything together, which can lead to streaks of dry flour or overdevelopment of the batter.
Add the flour mixture to the sugar mixture alternately with the strawberry mixture, beginning and ending with the flour mixture. Scrape the batter into the prepared pan.: Alternating wet and dry additions creates the right balance so the batter stays pourable yet structured. As you fold, the color will shift to a rosy, speckled tone with visible fruit pieces. Use a spatula to scrape the bowl so no pockets of dry flour remain. Overmixing at this stage develops structure that can make the cake tough, so stop folding once streaks disappear and the batter is smooth.
Bake 30 minutes or until a toothpick inserted into the center comes out clean. Cool completely.: While baking the kitchen will fill with the fragrance of strawberries and warm spice, and the cake top will turn golden. Listen for a gentle settling sound as steam escapes, and watch the edges pull slightly away from the pan. A toothpick test ensures the center is set; if crumbs cling, give it an additional few minutes. Opening the oven too often can cause the center to collapse, so resist peeking until near the end of the bake time.
In a large bowl, use an electric mixer to combine the cream cheese and powdered sugar; beat until creamy. Add in the cream and vanilla; mix until it becomes a creamy spreadable texture.: The frosting begins as a dense, tangy blend, then lightens as you add chilled heavy whipping cream , transforming into a cloud like spread. You will hear the mixer change pitch as volume increases, and the frosting will hold soft peaks when ready. If the cream cheese is too cold, lumps will remain, so ensure proper room temperature. Overwhipping will cause separation, so stop when the frosting is smooth and pipeable.
Frost the cake. It will have a thick layer of frosting!: When you spread the frosting, you should feel a smooth resistance and see glossy peaks that settle gently. A generous layer cushions the crumb and creates contrast with the fruit. Use long, even strokes for an attractive finish and scrape excess back into the bowl. A mistake is trying to frost a warm cake, which will melt the frosting and cause sliding; always ensure the cake is fully cooled.
Arrange sliced strawberries on top. Cover and keep refrigerated until ready to serve. Let sit at room temperature for about 20 minutes before slicing and serving.: Placing the sliced strawberries creates visual appeal and a fresh burst in each bite. Chill preserves the frosting stability and keeps the flavors melded, while letting the cake rest at room temperature before slicing allows the crumb to soften and the aromas to open. Do not leave the frosted cake unrefrigerated for long periods, as the frosting contains cream cheese and heavy whipping cream , which can become unsafe at warm temperatures.