This Homemade Blueberry Sauce is a quick and easy sweet topping made from fresh or frozen blueberries, lemon juice, sugar, and cornstarch. Ready in just 10 minutes, it’s perfect for enhancing breakfasts like pancakes and waffles, or drizzling over desserts such as ice cream and cheesecake. The sauce is syrupy, packed with juicy berries, and can be customized with optional flavor twists like citrus zest or warm spices.