01 -
Preheat the oven to 350°F. Grease two 8-inch round cake pans. Line the bottoms with parchment paper rounds and lightly grease the paper.
02 -
Sift flour, baking powder, baking soda, and salt in a medium bowl and set aside.
03 -
Beat butter and granulated sugar at medium speed until pale and fluffy, about 3 to 4 minutes.
04 -
Add eggs one at a time, beating well after each addition. Scrape down bowl sides and bottom.
05 -
Mix in half of the dry ingredients until just combined. Add strawberry jam and mix until combined. Add remaining dry ingredients and mix until no streaks of flour remain.
06 -
Add sour cream, vanilla extract, and red food coloring if using. Mix until just combined.
07 -
Divide batter evenly between pans. Spread gently into an even layer. Bake 35 to 45 minutes until a toothpick inserted in center comes out clean. Cool in pans on rack for 10 minutes, then invert cakes onto rack, remove parchment, and cool completely.
08 -
Grind freeze-dried strawberries in a spice grinder or mini food processor until fine powder forms. Ensure equipment is dry before grinding.
09 -
Beat cream cheese and butter on medium speed until pale and fluffy, about 2 minutes. Add powdered sugar, strawberry powder, and salt. Beat on low speed to combine, then medium speed until creamy. Add milk, a teaspoon at a time, if frosting is too thick, beating after each addition to desired consistency.
10 -
If cakes are domed, trim tops with serrated knife to flatten. Place one layer on serving plate, spread just under one-third of frosting evenly to edges. Top with second layer, frost with another one-third of frosting, then frost sides with remaining frosting. Garnish with sliced fresh strawberries.
11 -
Store leftover cake tightly covered in refrigerator for up to 5 days. If not serving immediately, cake can be refrigerated uncovered for up to 2 hours before serving.