Combine Ingredients: In a medium saucepan, combine the blueberries, water, and sugar.

Cook: Bring the mixture to a simmer over medium heat, stirring occasionally.

Simmer: Let it simmer for about 10–15 minutes, or until the blueberries have burst and the mixture has thickened slightly.

Add Lemon Juice: Stir in the lemon juice and any optional flavorings like vanilla extract or cinnamon.

Cool: Remove from heat and let it cool to room temperature. The compote will continue to thicken as it cools.