First, warm up your oven to 180°C (about 356°F) and prepare a baking sheet by lining it with parchment paper or a silicone mat, this makes cleanup so much easier.
In a medium microwave-safe bowl, combine your brown sugar, softened butter, vanilla extract, cinnamon, salt, and a pinch of nutmeg. Stir everything together until it’s well blended.
Microwave this mixture in 40-second intervals, stirring after each, until it’s bubbling and the sugar has melted into a smooth, golden syrup.
Add your broken graham cracker pieces to the bowl and stir gently, making sure every crumb is coated with that rich, spiced buttery sauce.
Spread the coated graham cracker mixture evenly across your prepared baking sheet. Then sprinkle a light layer of granulated sugar over the top to create a crispy, caramelized crust.
Slide the baking sheet into your preheated oven and bake for 10 to 15 minutes, or until the topping turns a lovely golden brown and fills your kitchen with an irresistible aroma. Let it cool fully before the next step.
While the crumble cools, grab a tall bowl and your electric mixer. Beat the softened cream cheese until it turns light and velvety. It might look thick or a bit clumpy at first, don’t worry, just keep mixing and it will loosen up.
Add the dry cheesecake pudding mix to the cream cheese and beat on high speed until everything is fully combined.
With your mixer on low, slowly drizzle in the vanilla creamer a spoonful at a time. Take your time and keep mixing until the mixture becomes silky smooth with no lumps.
Finally, fold in the fresh peach chunks gently, then chill the mixture until you’re ready to serve. When the moment arrives, sprinkle the cooled crumble topping on top and give it a soft stir to blend all those delicious flavors together.