Caramel Pecan Upside Down Muffins

Ingredients

• 1 cup granulated sugar
• 1/2 cup unsalted butter
• 2 tbsp water
• 1 cup chopped pecans
• 2 cups all-purpose flour
• 1/2 cup packed brown sugar
• 1 tsp baking powder
• 1/2 tsp baking soda
• 1/4 tsp salt
• 1 cup buttermilk
• 1/3 cup vegetable oil
• 1 large egg
• 1 tsp vanilla extract