01 - Line a 12-cup muffin tin with paper liners or use silicone molds.
02 - In a bowl, combine graham cracker crumbs, sugar, and melted butter until evenly moistened. Press approximately 1 tablespoon of the mixture firmly into the bottom of each liner. Refrigerate while preparing the filling.
03 - In a large bowl, beat the cream cheese until smooth and creamy. Add powdered sugar, vanilla extract, lemon zest, and ground lavender, mixing until fully incorporated and uniform.
04 - In a separate bowl, whip the heavy cream to stiff peaks. Gently fold the whipped cream into the cream cheese mixture in two additions, maintaining volume for a light and fluffy texture.
05 - Spoon or pipe the filling evenly over the chilled crusts. Smooth the tops with a small spatula.
06 - Cover the muffin tin and refrigerate for at least 4 hours, or until the filling is firmly set.
07 - Combine blackberries, sugar, and lemon juice in a small saucepan. Cook over medium heat, stirring and gently mashing the berries, until the mixture becomes syrupy, about 5 minutes. Remove from heat and let cool completely.
08 - Spoon the cooled blackberry sauce over each mini cheesecake. Garnish with a sprig of fresh lavender or a whole blackberry, if desired. Serve chilled.