Preheat your oven to 325°F (163°C). Combine 1 ½ cups of graham cracker crumbs with ½ cup of melted unsalted butter. Press this mixture firmly into the bottom of a 9-inch springform pan. Bake for 10 minutes, then set aside to cool completely.
Whipping Up the Filling:
In a large mixing bowl, beat 3 (8 ounce) packages of softened cream cheese until wonderfully smooth. Gradually add 1 cup of granulated sugar, mixing until everything is well combined. Beat in 3 large eggs one at a time, mixing on low speed. Next, stir in ¼ cup of sour cream, ¼ cup of fresh lemon juice, 1 tablespoon of lemon zest, and 1 teaspoon of vanilla extract until the mixture is smooth and luscious.
Folding in the Blueberries:
Gently fold 1 cup of fresh blueberries into the cheesecake batter, distributing them evenly.
The Bake:
Pour the smooth filling into your cooled crust. Give the pan a gentle tap on the counter to release any trapped air bubbles. Bake for 50-60 minutes, or until the edges are set and the center still has a slight wiggle. Turn off the oven and prop the door slightly ajar. Let the cheesecake cool in the oven for an hour – this helps prevent cracks!
The Chill Factor:
Once cooled, cover the cheesecake and refrigerate it for at least 4 hours, or preferably overnight, to allow the flavors to meld beautifully and the cheesecake to fully set.
Berry Beautiful Sauce:
In a small saucepan, combine ¼ cup of blueberry jam with a tiny splash of water over medium heat. Stir until it's warm and smooth. Let it cool slightly before drizzling it over your chilled cheesecake.
Time to Serve!
Carefully release the cheesecake from the springform pan. Slice and serve each piece with a generous drizzle of that gorgeous blueberry sauce. For an extra touch of freshness, garnish with a few extra fresh blueberries and a sprinkle of lemon zest.