Mash the blueberries (if using fresh) before cooking. If using frozen, mash the blueberries as they soften during cooking.
Place the blueberries, lemon juice, and honey in a saucepan and bring to a boil. Make sure to continously stir.
Once the pot is boiling, reduce the heat to a simmer
Simmer for about 30-40 minutes stirring regularly until the jam gels.
Remove the pan from the heat and pour the jam into a jar.
Allow the jam to cool and then store it in the refrigerator for up to 2-3 weeks.