Combine 1 1/2 cups berries and syrup in a small saucepan over medium heat. Cook until berries are slightly softened, about 2 minutes, then mash using the back of a spoon. Simmer until mixture foams up a bit, about 1 to 2 minutes more.
Remove from heat, strain to remove blueberry solids, stir in remaining 1 1/2 cups berries, and use to top pancakes, waffles, or French toast.
Recipe courtesy of Aida Mollenkamp