Sparkling Water Chocolate Cake with Peanut Butter Frosting - Edible Santa Barbara and Wine Country

Ingredients

• 1 1/3 cups all-purpose flour
• 1/3 cup cocoa powder (natural)
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup sugar
• 1/3 cup coconut oil (warmed to its liquid state)
• 1/2 teaspoon vanilla extract
• 1 cup sparkling water
• 1 tablespoon apple cider vinegar
• 1/2 cup peanut butter (room temperature)
• 4 tablespoons butter (softened)
• 1 cup powdered sugar (sifted)
• 2 tablespoons milk