Pour 16 cups of water into a large pot. Add salt to the water. Turn on the heat of the stove and wait for the water to start boiling. Once it does, add the pasta to the boiling water. It should take between 10 and 15 minutes for the pasta to turn soft.
After the pasta turns soft in the boiling water, place a strainer in the sink and dump the water and pasta into the strainer. Place the pasta aside for a few moments.
Turn on the oven. Set the temperature to 350℉ and leave it on.
Put the large pot back on the stove and set it to medium heat. Add bell peppers, onions, garlic, and sauté better to the pot. Stir it around and let it cook for 2 minutes. The peppers should be tender by that point.
Take the strainer filled with pasta and dump it into the large pot. Mix the pasta around with the other ingredients in the pot. Pour the can of evaporated milk into the pot and stir everything together. Now add the grated parmesan, mayonnaise, seasoned salt, and gouda cheese, Mix everything together. The salt is optional, but some people might want it to enhance the flavor of the dish.
Take out a rectangular baking dish that is 15”x10”x2” and place it on the counter. Begin pouring the mixture from the pot into the baking dish. Tryto fill the entire area of the rectangle and spread it out to each side. If you have any gouda or parmesan cheese left, then add that to the top later in the dish.
Now put the uncovered baking dish on the middle rack of the oven. Leave it in there for anywhere between 45 to 60 minutes. The top of the dish should become golden brown by that point.
Take the dish out of the oven and let it cool down for about 10 minutes. Then you can serve the food to yourself or anyone else in your party.