Combine the sliced strawberries, monkfruit sweetener, vanilla extract (and lemon juice if using) in a small sauce pan over medium high heat. Bring the mixture to a simmer, while stirring occasionally.

Reduce the heat to medium to a light simmer (not a rolling boil) for 10 minutes, stirring and mashing the strawberries as they cook. The berries will reduce and the mixture will thicken.

Cook for another 5-10 minutes until the strawberries have reached your desired consistency.

Cool the strawberry mixture completely before serving.