Buttery Caramel Apple Jam

INGREDIENTS

• 8 half-pint canning jars with lids and rings
• 8 cups Granny Smith apples - peeled, cored, and chopped
• 1/3 cup water
• 1 tablespoon butter
• 3 cups brown sugar
• 2 cups white sugar
• 1 1/2 (1.75 ounce) packages powdered fruit pectin
• 1 tablespoon clear butter flavoring (such as Wilton®)