• In order to start on the crust, you’ll want to head on over to your oven, and preheat that bad boy to a standard 350°.
• As that sucker heats up, you can spend that time adequately greasing up a somewhat large cake frame. You’ll want it to be a decent size, as that will help this batch achieve a nice thickness, when it’s all said and done.  
• I’d say aim for an 8” x 12” cake frame. That ought to do the trick. 
• After you’ve thoroughly greased up that cake frame, carefully put it atop a cookie sheet that’s been lined with parchment paper. 
• Then, you’ll want a fairly large bowl. In which, you will beat together your sugar, cannabis-infused butter, and regular butter.  
• Really whip those ingredients together until they are nice and fluffy. At that point, you can then toss in your salt and flour. When those are thrown in, keep blending that mixture together, until everything is expertly combined with one another. 
• Now, with your hands, place that combination of ingredients into that previously-greased pan, making sure to press down to establish a hearty foundation for the other ingredients to rest upon.
• When you’ve adequately accomplished that task, you can then toss it in the oven, and let it bake in there for a solid 20 minutes. You’ll know it is done when it starts to sport a healthy, golden brown hue. 
• When you’re happy with how everything is looking, remove it from the oven, and place it to the side to cool down. And, boom, that’s how you make your crust. Now, let’s move onto the most important part: the filling.

Make the filling

• To make the filling for your THC-Infused Blueberry Lemon Cheesecake Bars, you’ll need to reutilize that very same bowl you used for the crust mixture, and beat together your sugar and cream cheese, until the entirety of the contents take on a super smooth consistency.
• Using a spatula, carefully scrape the sides of the mixing bowl. Your goal is to make sure you don’t have any pesky lumps of cream cheese to contend with. If the coast is clear of lumps, you can then beat in that trusty egg of yours. Again, implement that scraping method to ensure that you remain “lump-free.” 
• Following that step, you can now feel free to beat in your lemon juice, vanilla extract, and sour cream (or Greek yogurt). After you’ve thoroughly beat those ingredients into the mixture, take that spatula of yours, and fold in those delicious blueberries. 
• After that is done and looking good, you can get to work on your scrumptious crumble covering.

Make the covering

• To do that, you’ll need to incorporate another bowl into the mix, this time it can be a rather small one. In it, you will take all of those listed ingredients needed for the crumble, and throw them all in there at once.
• Mix those elements together, until the whole blend starts to take on the look (and feel) of sand. That’s your crumble covering. 
• But we’re not completely done with the entire recipe just yet. We need to put everything together in order to call this dish a “success.”
• So, what you’ll want to do now, is pour that mouthwatering filling onto that cooled-off crust from earlier. Spread it out nice and even, to allow for maximum coverage. Once that’s done, you can grab your crumble covering, and strategically sprinkle it over the newly-placed filling mixture.
• At this point, you can throw it in the oven for about 40 or so minutes. You’ll know everything is ready to go, once the exterior of your bars start to transform into a delectable golden brown.
• When that is looking as it should, and the interior filling has adequately settled, take it out of the oven, and let that bad boy mellow out for half an hour before doing anything.
• In fact, after that 30 minute period, toss it in the fridge for a spell. When they reach your desired consistency, you may then cut up these bars, and portion them out however you see fit.