Homemade Condensed Milk

Whisk together milk and sugar in a medium saucepan over medium-low heat.

Whisking often, bring to a low simmer. Continue to simmer, whisking often, until milk has reduced by half, about 30 minutes.

Once reduced, remove from heat and stir in vanilla.

Allow to cool completely and store in a mason jar in the refrigerator for up to 1 month