1 box (21 oz) Immaculate Baking Co. Chocolate Cake Scratch Mix
1 1/4 cups Milk
1 1/2 sticks (3/4 cup) Butter, Melted
1 cup Fresh Strawberries, stems and leaves removed
2 tablespoons Fresh Lemon Juice
1 cup (2 sticks) Unsalted Butter, softened
4 cups Powdered Sugar
1 tablespoon Milk
1 tablespoon Vanilla
* Chocolate Covered Strawberries, for topping
Heat oven to 350 degrees F for shiny metal pan or 325 degrees F for dark, nonstick or glass pan. Grease and flour bottoms and sides of 2 heart-shaped pans (or two 9-inch round cake pans or three 8-inch round cake pans).
Prepare cake ingredients as directed on cake mix box. Divide batter evenly among prepared pans. Bake 25 to 35 minutes until toothpick inserted in center of cakes comes out clean. Cool cakes 10 minutes in pans, then carefully remove from pans and cool completely on cooling rack, about 1 hour.
Meanwhile, in blender or food processor, blend strawberries and lemon juice until fully pureed. Pour puree into small saucepan. Bring mixture to simmer over medium heat and cook, stirring constantly, 10 to 15 minutes until mixture reduces to about ¼ to ⅓ cup. Cool completely to room temperature.
In large bowl or bowl of stand mixer, beat butter and strawberry mixture 1 to 2 minutes on medium speed until smooth and creamy. Beat in powdered sugar on medium speed 1 cup at a time, beating well after each addition until mixture is smooth. Add milk and vanilla; stir to combine. Increase speed to high and beat 1 minute more until frosting is creamy and fluffy.
Place 1 cake layer on serving plate. Frost top with generous amount of frosting. Top with remaining cake layer; frost top and sides with remaining frosting. Decorate with chocolate-covered strawberries, if desired. Store leftovers tightly covered in refrigerator up to 3 days.
*To make chocolate-covered strawberries, melt ½ cup semisweet chocolate chips and 1 tablespoon vegetable oil in small saucepan over low heat, stirring constantly until smooth. Dip strawberries halfway into chocolate mixture, then transfer to wax paper or parchment paper-lined baking sheet. Chill in refrigerator 30 minutes to set.