A small batch blueberry jam made on the stovetop with just blueberries, sugar and lemon juice. Makes about 1 cup.
Mix blueberries, sugar, lemon juice, and cinnamon in a saucepan.
Cook, stirring constantly, over medium heat until thickened, about 30 minutes.
Remove from the heat and let the jam cool completely. Transfer to an airtight container and refrigerate until chilled and set. Enjoy!