These cheesecake bars require zero oven time and the subtly sweet blueberry jam on top really sends it home. They require about twenty minutes of preparation, then just chill to set for about four hours or overnight and you are ready to go!
Add the cream cheese and sour cream to a mixing bowl fitted with a paddle attachment. Mix until smooth and well combined.
Add the heavy cream to the mix and whip again until smooth. Then add the sugar, vanilla extract, lemon juice, zest, and a tiny pinch of salt. Whip again, scraping down the sides of the bowl as needed.
Cover and refrigerate while you prepare the crust and blueberry jam topping.
Make the Crust:
Break up your graham crackers and add them to a food processor fitted with a blade. Grind them up into a coarse sand-like consistency. Add the old fashioned oats and process until even textured and well combined.
Add your brown sugar, cardamom, and melted butter and whirl away until you have an even texture throughout.
Remove the bowl from the processor and pile the graham-oat-butter mixture into the bottom of your baking dish. Spread it evenly so it is about the same thickness in all the places and gently press into the dish, creating a formed crust. Clean up any wild edges / crumbs and tuck in the fridge or freezer to allow the butter to harden and solidify the crust.
Blueberry Jam Topping:
Heat your small saucepan over medium heat and add your blueberries and lemon juice, stirring every few seconds to help the berries break down. Set ½ cup of blueberries to the side to be used later.
When the berries are bursting and a jammy texture starts to form, add your maple syrup and give another stir. Be sure to leave some of the berries whole/intact to add a variety in texture.
Pour and spread onto a parchment lined baking sheet and pop in the freezer while you assemble the other layers.
Assemble your bars!
Remove the crust and cheesecake filling from the refrigerator.
Scoop the cheesecake onto the crust and spread in an even layer until all of the crust is completely covered.
Remove the blueberry jam from the freezer and scrape into a bowl. Add dollops to the top of the cheesecake layer and spread evenly across the dessert. If you want defined layers between the cheesecake and blueberry topping, allow the cheesecake to fully set before adding the berry jam.
Top with the remaining fresh blueberries, cover and refrigerate for at least two hours and up to overnight.
Notes
If you want defined layers between the cheesecake and blueberry topping, allow the cheesecake to fully set before adding the berry jam.
Use your favorite local or store-bought jam if you prefer to save time. Fresh jam is less sweet and has amazing flavor, but do what you need to do! No shame!
You can play around with the cream cheese to creme fraiche/sour cream ratio a bit to suit your preferences in flavor and texture. Remember that the more liquid you introduce, the longer the setting time.
If you are pressed for time and the two hour minimum refrigeration step is a no-go, no problem. Bring a knife (the crust will need it) and a serving spoon. Let it be a bit on the messy side and serve with a fork!
If completely set, a warm knife will aid in the cutting process to make for smooth, clean slices.