In a stand mixer fitted with the paddle attachment, cream the butter and sugar together until smooth, about 1 minute. Add the vanilla, almond extract, flour, salt, 3 Tablespoons of milk/cream, and mix until combined. Add 2-3 Tablespoons of milk/cream until dough holds together; set aside.

Line a baking sheet with wax paper. Melt 8 ounces of the white chocolate in the microwave until smooth, then spread the melted chocolate into a rectangle that's roughly 9" by 12". Transfer to the refrigerator until set, about 5 minutes.

Once set, scoop cookie dough evenly over the chocolate and use a rubber spatula or your fingers to gently press the filling into an even layer.

Melt the remaining 8 ounces of chocolate in the microwave, then spread on top of the cookie dough. Immediately add the toppings. Chill until set, about 20 minutes. Break/Cut into pieces and serve.