Add the raspberries and ½ cup of water to a pan and bring to a boil.
Reduce the heat and simmer for 15-20 minutes.
Place a mesh strainer over a bowl and pour in the raspberry mixture.
Use a spatula to push the juice out of the raspberries.
Return the raspberry juice to the pan, and add the remaining water and sugar.
Bring to a boil again, then reduce to a simmer for 5-10 minutes.
Remove from heat and stir in the vanilla extract.
Pour over your favorite pancakes, waffles, french toast, or dessert!