Combine 1½ cups graham cracker crumbs and ⅓ cup melted butter. Spoon about 1 Tablespoon of the mixture into each jar. Lightly press with your fingers to form a crust.
In a mixer, beat 24 oz cream cheese until smooth. Scrape sides and beater to ensure it is all light and creamy.
Add 14 oz sweetened condensed milk and beat to combine.
Add 4 large eggs, 2 teaspoons vanilla extract, and ¼ teaspoon lemon extract. Mix on low until incorporated. Be careful not to whip in too much air.
Use and ice cream scoop or large cookie scoop to transfer mixture into jars. It should come up to about where the bottom of the lid should be.
Bake 20-25 minutes or until just set. Allow to cool at room temperature.
To make strawberry sauce, combine 16 oz strawberries, ½ cup granulated sugar, 3 Tablespoons cornstarch, ½ cup water, and 1 Tablespoon lemon juice in a sauce pan and bring to a light boil. Mash berries with a potato masher or use an immersion blender until you get your desired consistency. Spoon over cheesecakes.
Chill for at least an hour or until ready to serve.