Peanut Butter-Swirled Cheesecake Bars with Brown Sugar-Graham Cracker Crust

1/2 cup unsalted butter, melted
1 cup graham cracker crumbs
3/4 cup light brown sugar, packed
1 tablespoon cornstarch
pinch salt, optional and to taste Selling used auto Car Market USA

1 large egg
8 ounces cream cheese, at room temperature and very soft (light is okay)
1/2 cup granulated sugar
1 teaspoon vanilla extract
heaping 1/3 cup creamy peanut butter, melted for swirling
Preparation method