Set rack to the middle position and preheat oven to 350 degrees.
Line a 13x9 inch pan with non-stick aluminum foil.
In a food processor, grind the Oreos until fine, yielding 3 cups.
Melt butter in a small saucepan.
Combine Oreo crumbs and butter and mix well. Press into baking pan.
Bake for 15 minutes, cool completely.
Using a hand mixer, beat the cream cheese until smooth. Beat in granulated sugar. Add sour cream a little at a time and beat well. Add confectioner's sugar and beat to combine. Scrape down the sides of the bowl as needed.
Add eggs one at a time, beating well after each addition. Pour in vanilla, 1 tbsp lemon juice and lemon zest and beat until combined.
Pour mixture over the cooled crust, spread into an even layer.
Bake for 30 minutes until firm and slightly puffed.
Cool for 45 minutes.
In a small bowl, stir 1 tbsp of lemon juice with the gelatin. Set aside for about 5 minutes until the gelatin softens.
While waiting for the gelatin, microwave 1 cup of the raspberry jam until warm. Whisk the jam until smooth.
Add gelatin mixture and whisk together. Set aside for 15 minutes.
Pour the raspberry jam evenly over the top of the cheesecake.
Refrigerate for at least 2-3 hours to set. For best results make cheesecake a day before serving.
Use the ends of the foil to carefully lift the cheesecake out of the pan. Place on a cutting board, roll the foil down and cut into 2x2.5 inch bars. About 20 bars.
Microwave remaining tbsp of jam until warm. Add raspberries and toss gently.
Press 2 raspberries onto the top of each bar.
Serve and enjoy!
Place in an airtight container and refrigerate leftovers for up to 5 days.