How to Cook Costco Mac and Cheese: A Step-by-Step Guide

If you’re a fan of Costco’s mac and cheese, you know just how delicious it is. But what happens when you want to enjoy it at home? Cooking Costco mac and cheese might seem daunting, but with the right ingredients and equipment, it’s actually quite easy to make. In this article, we’ll take you through a step-by-step guide on how to cook costco mac and cheese.


Costco mac and cheese is a crowd-pleaser, and it’s no surprise why. It’s creamy, cheesy, and oh-so-comforting. Whether you’re serving it at a party or enjoying it on a lazy Sunday afternoon, it’s the perfect dish for any occasion.

But cooking Costco mac and cheese at home can be a bit intimidating. After all, it’s not like your typical boxed mac and cheese. However, with a little bit of help, you can create a dish that’s just as delicious as the one you get at Costco.

Ingredients for Costco Mac and Cheese

Before you start cooking, it’s essential to gather all the necessary ingredients. Here’s what you’ll need:

  • 1 package of Costco mac and cheese
  • 1 cup of milk
  • 1/4 cup of unsalted butter
  • 2 cups of shredded cheddar cheese

It’s important to use the exact ingredients listed above to ensure that your mac and cheese turns out as delicious as possible. You can also add in any additional ingredients you like, such as bacon or green onions, to give your dish a little extra flavor.

When purchasing your ingredients, always check the expiration dates to ensure that they’re fresh. It’s also a good idea to buy organic or locally sourced ingredients whenever possible. Not only are they better for the environment, but they often taste better too.

Now that you have your ingredients ready, it’s time to move on to the next step, which is gathering the equipment you’ll need to cook your mac and cheese.

(Next, write sections 3 and 4)

Equipment Needed to Cook Costco Mac and Cheese

To cook Costco mac and cheese, you’ll need some basic kitchen equipment. Here’s what you’ll need:

  • Large pot
  • Colander
  • Whisk
  • Measuring cups and spoons
  • Spatula
  • Baking dish

Make sure to use a pot that’s large enough to hold the mac and cheese as it cooks. You’ll need to whisk the ingredients together, so a good quality whisk is essential. A spatula will come in handy when it’s time to transfer the mac and cheese to a baking dish.

It’s also important to use the right size baking dish. A 9×13 inch dish is perfect for this recipe. Make sure it’s oven-safe and can withstand high temperatures.

Steps to Cook Costco Mac and Cheese

Now that you have all your ingredients and equipment ready, it’s time to start cooking. Here are the steps to follow:

  1. Preheat your oven to 375┬░F.
  2. Cook the macaroni according to the instructions on the package. Drain and set aside.
  3. In a large pot, melt the butter over medium heat.
  4. Slowly whisk in the milk until well combined.
  5. Add the cheese sauce packet from the mac and cheese box, and whisk until fully dissolved.
  6. Add the cooked macaroni to the pot and stir until well coated with the cheese sauce.
  7. Transfer the mac and cheese to a baking dish.
  8. Top with the shredded cheddar cheese.
  9. Bake in the oven for 20-25 minutes or until the cheese is melted and bubbly.
  10. Remove from the oven and let it cool for a few minutes before serving.

Follow these steps carefully, and you’ll have a delicious batch of Costco mac and cheese that’s sure to impress.

In the next section, we’ll talk about how to serve and store your mac and cheese.

Serving and Storing Costco Mac and Cheese

Once your mac and cheese is ready, it’s time to serve it up. You can either serve it right away while it’s still hot, or you can let it cool down for a few minutes if you prefer to eat it at a slightly lower temperature.

If you’re serving your mac and cheese at a party or gathering, it’s a good idea to keep it warm using a chafing dish or slow cooker. This will ensure that it stays at the perfect temperature and prevents it from getting cold and clumpy.

As for storing leftover mac and cheese, simply transfer it to an airtight container and store it in the fridge for up to 3-4 days. When reheating, you can either microwave it or heat it up on the stove with a little bit of milk to help bring back its creaminess.


Cooking Costco mac and cheese might seem intimidating at first, but with the right ingredients and equipment, it’s a piece of cake. Whether you’re hosting a party or just enjoying a cozy night in, this classic comfort food is sure to be a hit.

Remember to always use fresh, high-quality ingredients and to follow the recipe closely. With a little bit of practice, you’ll be able to whip up a batch of delicious Costco mac and cheese in no time.

Related Posts