Line a 11x14 baking pan with parchment paper and lightly grease with cooking spray, set aside.
Melt butter in a large pot on the stove over medium heat, and stir in the salt.
Measure out and set aside 1 ½ cups of marshmallows to mix in at the end. Add the remaining marshmallows to the pot to melt with the butter and stir until it is a smooth consistency.
Take the pot off of the heat before adding in the vanilla and food coloring. Stir until you get a nice pink color. Add another drop at a time of food coloring if needed.
Fold in the rice krispies cereal, crushed circus animal cookies, white chocolate chips, and sprinkles.
Add the 1 ½ cups of marshmallows you set aside earlier and fold gently until combined. Spread the mixture into the baking pan into an even layer. It helps to use a rubber spatula to press it in.
Melt the candy melts in the microwave and drizzle it on top. Then place the full circus animal cookies on top and add extra sprinkles.
Allow it to cool on the counter for 30 minutes to 1 hour before cutting.