Vanilla Sheet Cake with Cream Cheese Frosting - Once Upon a Chef

Ingredients

• 2¾ cups all-purpose flour, (spooned into measuring cup and leveled-off)
• ½ teaspoon salt
• ½ teaspoon baking soda
• 1 cup (2 sticks) unsalted butter, softened
• 2 cups granulated sugar
• 2 teaspoons vanilla extract
• 4 large eggs, (at room temperature)
• 1 cup buttermilk ((see note))
• 8 oz cream cheese, (at room temperature)
• ½ cup (1 stick) unsalted butter, at room temperature
• 1 teaspoon vanilla extract
• Pinch salt
• 4 cups confectioners' sugar
• Sprinkles, (for decorating (optional))