In a large bowl with a hand mixer or the bowl of a stand mixer, blend the butter, cream cheese, sugar, lemon juice, flour, salt, and vanilla to form a stiff dough.
Add the sprinkles and blend until well distributed throughout the dough.
Add the graham cracker crumbs into an oblong, shallow dish.
Form the dough into two long logs approximately 2" in circumference.
Roll each log into the graham cracker crumbs to coat and wrap each log with plastic wrap.
Place the logs into the freezer for at least 30 minutes.
When ready to bake, preheat oven to 350-degrees.
Unwrap the logs and slice into 1/4" slices.
Place the slices onto a parchment lined baking sheet.
Bake in a preheated oven for 12-15 minutes, rotating halfway through the baking process.
Cool completely and serve.