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Preheat oven to 350 degrees.
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Line a 9x13 glass baking dish with foil and spray with non stick cooking spray.
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In a medium sized bowl, stir together graham cracker crumbs, 1/4 cup of sugar and melted better.
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Press graham cracker mixture into bottom of baking pan.
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Bake graham cracker crust for 10 minutes, then set aside to cool.
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In the bowl of a stand mixer, beat cream cheese and remaining cup of sugar together until smooth.
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Add eggs, sour cream and vanilla extract and continue mixing until smooth.
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For cream cheese mixture over crust and smooth.
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Drop warmed strawberry jam by the small spoonful all over cheesecake batter and use a butter knife to swirl.
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Bake cheesecake for about 30 minutes, until edges are set but middle is still loose.
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Let cheesecake cool completely, then refrigerate until chilled and set, 2-3 hours.
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Cut into bars and serve.