Preheat your oven or electric roaster to 250 degrees F. (Not a misprint. That's two hundred and fifty degrees.)
Spray the inside of your roaster with Pam or another nonstick cooking spray.
Place the Rice Chex cereal in the bottom of the roaster.
Melt the butter for 2 minutes on HIGH. Let it sit in the microwave for a minute and stir it with a heat-resistant spatula to make sure that it's melted.
Stir in 5 drops of hot sauce.
Stir in the teaspoon of garlic salt.
Drizzle approximately one-quarter (about 1/2 cup) of the butter mixture on top of the Rice Chex.
Place the Wheat Chex cereal on top of the Rice Chex cereal.
Drizzle another half-cup of the butter mixture on top of the Wheat Chex cereal.
Place the Corn Chex cereal on top of the Wheat Chex cereal.
Drizzle another half-cup of the butter mixture on top of the Corn Chex cereal.
Place HALF the box of Cheerios cereal on top of the Corn Chex cereal.
Drizzle the remainder of the butter mixture over the top of the Cheerios cereal.
Sprinkle the bag of Goldfish crackers over the top.DO NOT add the mixed nuts or the stick pretzels yet! They will be added later. Mix the contents of the roaster together.
Bake at 250 degrees F. for 15 minutes.
You will bake your Cocktail Munchie Mix for a total of 1 and 1/2 (one and one-half) hours, not counting mixing times.
When one hour has passed (that consists of four 15-minute segments), open the can of mixed nuts and sprinkle them over the top of your Cocktail Mix.
Open the bag of stick pretzels and mix those in. Mix carefully so that they don't break up into little pieces.Put the roaster back into the oven and bake at 250 degrees F. for an additional 1/2 (half) hour. To store: Keep in a tightly sealed bag in the kitchen cupboard for no more than a week or two.