Watermelon Cake Recipe

Ingredients

• nonstick baking spray
• 2 1/2 cups all-purpose flour
• 1 tablespoon all-purpose flour
• 3 tablespoons watermelon-flavored gelatin mix (such as Jell-O®)
• 1 teaspoon baking powder
• 1 teaspoon kosher salt
• 1/2 teaspoon baking soda
• 1 cup unsalted butter, softened
• 2 cups white sugar
• 3 large eggs
• 1 1/2 cups whole buttermilk
• 2 teaspoons vanilla extract
• 1 teaspoon red gel food coloring
• 1 cup miniature semisweet chocolate chips
• 1 1/2 cups unsalted butter, softened
• 1/4 teaspoon kosher salt
• 6 cups powdered sugar
• 6 tablespoons heavy whipping cream
• red food coloring gel
• green food coloring gel
• miniature semisweet chocolate chips for decoration