01 - Line a standard 12-cup muffin tin with 8 paper liners, spacing them evenly apart.
02 - In a medium bowl, combine the graham cracker crumbs, melted butter, and granulated sugar. Stir until the mixture resembles wet sand and holds together when pressed.
03 - Divide the crumb mixture evenly among the 8 liners. Using the back of a spoon or a small measuring cup, press the crumbs firmly into the bottom of each liner to create a compact, even crust. Place the tin in the refrigerator to chill while preparing the filling.
04 - In a small saucepan, combine 1 cup of fresh blackberries, lemon juice, and culinary lavender buds. Cook over medium heat for 5 to 7 minutes, gently mashing the berries with a spoon as they soften and release their juices. Remove from heat and press the mixture through a fine-mesh sieve into a clean bowl, discarding the seeds and lavender buds. Allow the puree to cool completely.
05 - In a medium bowl, beat the softened cream cheese with the powdered sugar using a hand mixer or stand mixer on medium speed until completely smooth and creamy, scraping down the sides as needed.
06 - Add the vanilla extract and the cooled blackberry-lavender puree to the cream cheese mixture. Beat on medium speed until fully incorporated and the mixture is evenly colored.
07 - In a separate chilled bowl, whip the heavy cream until stiff peaks form. Using a spatula, gently fold the whipped cream into the cream cheese mixture in three additions, being careful not to deflate the cream.
08 - Spoon or pipe the filling into the prepared crusts, dividing it evenly. Smooth the tops with a small spatula or the back of a spoon.
09 - Refrigerate the mini cheesecakes for at least 4 hours, or preferably overnight, until the filling is firm and fully set.
10 - If making the sauce, combine 1/2 cup fresh blackberries, honey, lemon juice, and dried culinary lavender in a small saucepan. Simmer over medium heat for 5 to 7 minutes, mashing the berries as they cook. Strain through a fine-mesh sieve and let cool completely before serving.
11 - Remove the cheesecakes from the paper liners and arrange on a serving plate. Top each with fresh blackberries and a drizzle of the blackberry lavender sauce if desired. Serve chilled.