01 - Line a standard 12-cup muffin tin with 8 paper liners and set aside.
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 lined cups, pressing firmly into the bottom of each. 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, mashing the berries with a spoon as they soften. Remove from heat, press through a fine-mesh sieve into a bowl, and discard the seeds and lavender solids. Allow the puree to cool completely.
05 - In a medium bowl, use a hand mixer to beat the softened cream cheese and powdered sugar together until smooth, lump-free, and creamy.
06 - Add the vanilla extract and the cooled blackberry-lavender puree to the cream cheese mixture. Beat on medium speed until evenly combined and uniformly purple in color.
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, preserving as much air as possible.
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 overnight until the filling is firm and fully set.
10 - If making the sauce, combine 1/2 cup blackberries, honey, lemon juice, and dried lavender in a small saucepan. Simmer over medium heat for 5 to 7 minutes, mashing the berries. Strain through a fine-mesh sieve and let cool.
11 - Carefully remove the cheesecakes from the liners. Top each with fresh blackberries and a drizzle of the blackberry lavender sauce, if desired. Serve chilled.