Step 1

Preheat the oven to 350 degrees Fahrenheit.

Step 2

Grease a deep, 2 1/2-quart baking dish with butter.

Step 3

Fill a large pot with water. Mix in the vegetable oil and bring to a boil. Add the macaroni and cook until al dente, about 7 minutes. Drain well and rinse with cold water.

Step 4

Melt 8 tablespoons of butter in the microwave or a saucepan. Pour the butter into the macaroni and stir.

Step 5

In a large bowl, combine the shredded Muenster, mild cheddar, sharp cheddar, and Monterey Jack cheeses.

Step 6

Add 1 1/2 cups of the cheeses to the macaroni. Stir in the half-and-half, Velveeta, and eggs; season with salt and pepper.

Step 7

Transfer the mac and cheese into the prepared baking dish. Sprinkle the remaining 1/2 cup of shredded cheese evenly. Top with the remaining 1 tablespoon of butter.

Step 8

Bake for 30 to 35 minutes or until the top turns golden brown and the cheeses start to bubble. Serve hot. Enjoy!