Healthy Rhubarb Cake in a Mug

Ingredients

• 1/4 cup whole grain flour
• 1 tablespoon coconut sugar
• 1/4 teaspoon baking powder
• Pinch of salt
• 2 tablespoons unsweetened applesauce
• 1 tablespoon almond milk
• 1/4 teaspoon vanilla extract
• 1/4 cup chopped rhubarb