Preheat your waffle iron

In a large bowl, mix together the flour, sugar, baking powder, and salt.

In a medium bowl, whisk together the eggs, milk, and vanilla

Add the wet ingredients into the dry mixture, stir until just combined. Stir in the melted butter.

Spray your iron with non-stick spray, and cook batter according to your waffle iron's instructions.

In a medium saucepan, add the berries, sugar, lemon juice, and cornstarch. Stir to combine.

Cook on low-medium heat for 15 minutes, or until the berries have softened, and the sauce has thickened.

Store in an airtight container in the fridge for one week.