Preheat the oven to 325℉ and line a muffin pan with parchment paper cupcake liners (or the foil part of the foil lined cupcake liners).
Crust:
Add graham crackers and mix in melted butter and vanilla extract until completely incorporated.
Add a heaping tablespoon of graham cracker mixture into each cup. Use the back of the tablespoon to press the cracker mixture all over the bottom and a little up the sides.
Cheesecake Filling:
Beat cream cheese and sugar for a couple of minutes with an electric mixer on medium speed.
Add egg and sour cream while still beating.
Lower the speed and beat in heavy whipping cream, cornstarch, and vanilla extract.
Scrape sides and bottom of the bowl and beat the mixture for a few more seconds until completely smooth.
Use an ice cream spoon to scoop even amounts of filling into each cup, filling them 3/4 of the way full.
Baking Mini Cheesecakes:
Bake the cheesecakes for 18-20 minutes. (The centers will still giggle slightly, so don't think it's undercooked.)
Take the cheesecakes out of the oven and let them cool to room temperature.
Cover the pan with food wrap or a fitter lid if available. Refrigerate for 2-4 hours.
Strawberry Topping:
Wash strawberries, cut off stems, and chop them into small cubes.
Preheat a sauce pot over medium heat. Add diced strawberries, water, and lemon juice. Let it cook for a couple of minutes and stir in sugar.
Cook over medium-low heat for about 10-15 minutes, stirring often. Take off heat and stir in vanilla.
Notes
*Gluten free notes: to make these cheesecakes gluten free, simply use gluten free graham cracker crumbs OR pulse gluten free graham crackers in the blender until it's just crumbs. Remaining ingredients should already be gluten free but check the labels.