Cheesy Mashed Potato Green Bean Casserole

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Cheesy Mashed Potato Green Bean Casserole

Cheesy mashed potato green bean casserole is the perfect side dish for your next family gathering! This dish is easy to make and features mouth-watering flavors that everyone will love. Plus, it’s a great way to sneak some vegetables into your loved ones’ diets! So gather up your ingredients and get ready to cook up this deliciousness.

It’s that time of year again, when the leaves start to change color and the cool breeze blowing in from the north signals the start of winter.

For many, this means comfort food season is officially upon us! One of our favorite comfort foods has got to be mashed potatoes, whether they’re served with gravy or just some butter and salt.

This dish is so versatile that it can be paired with practically any other food. In this blog post, we’ll show you how to turn your ordinary mashed potatoes into a delicious green bean casserole.

It’s the perfect side dish for your Thanksgiving or Christmas dinner!

Cheesy Mashed Potato Green Bean Casserole

Cheesy Mashed Potato Green Bean Casserole is a make-ahead side for your holiday table! This recipe combines 2 dishes in one for less of the fuss and more of your favorite comfort foods.

My two favorite holiday foods are literally mashed potatoes and green bean casserole. You can keep your turkey, holiday ham, pumpkin pie and cranberry sauce.

Just give me some gooey mashed potatoes and creamy green beans and I’m all set.

I decided it was time for me to combine my two loves in a dish of baked creamy cheesy gooey goodness, and that’s when I started on this recipe.

It actually did take a few batches to get it exactly right, but my taste testers (a.k.a. my in-laws) didn’t complain at all.

This recipe includes quite a bit of salt and pepper, so let’s take a minute to talk about the words “to taste.” A couple of years ago, a friend of mine asked me for an appetizer recipe recommendation, so I sent her one that I liked online.

The recipe had the words “add salt and pepper to taste” in it. The next day, she told me that her appetizer came out completely bland.

When I asked her if she added salt and pepper to taste, she said no, because she thought all of the flavors of the dish was already in the ingredients.

This is a common – and very understandable – mistake. Take this casserole for example. It has three kinds of cheese, potatoes, green beans, fried onions, and more.

But if you leave out the salt and pepper, your dish will still end up bland. Yes, the other ingredients in the dish do ultimately create the flavor, but adding salt and pepper enhances those flavors.

There’s a reason they’re the most commonly used seasonings, after all!

So when you see the words “add salt and pepper to taste” or “add more to taste,” then taste it! Even if it’s perfect, you got a little nibble of your dish before anyone else, and that’s half the fun of cooking, anyway!

The other half of the fun is hoarding leftovers for yourself.

What to serve with Cheesy Mashed Potato Green Bean Casserole

Cheesy Mashed Potato Green Bean Casserole is one of those dishes that is so good, it doesn’t need much else to round out a meal. That being said, there are a few things that go particularly well with this casserole.

  • A simple green salad is a great way to start, and it can be dressed up with a variety of toppings depending on your taste.
  • For the main course, Cheesy Mashed Potato Green Bean Casserole pairs well with roasted chicken or pork loin.
  • And for dessert, a classic Cheesecake or chocolate cake are both excellent choices.

So whatever you choose to serve with your Cheesy Mashed Potato Green Bean Casserole, you can be sure it will be a hit!

Cheesy Mashed Potato Green Bean Casserole

How to make Cheesy Mashed Potato Green Bean Casserole

  1. Preheat oven to 400 degrees.
  2. Butter a 1.4 liter baking dish (8×2 inches if round, 8×8 if square, 11×7 if rectangle), and set aside.
  3. In a large pot, add potatoes, ½ tbsp butter, 1 tsp salt, and enough water to cover potatoes by an inch. Bring to a boil over medium-high heat, and continue to boil for 15 minutes until cooked through (a fork will go through without resistance). Drain into a separate bowl and mash.
  4. With same pot, reduce heat to medium-low and melt ¼ cup butter. Add mashed potatoes, mozzarella, milk, and parmesan. Stir until cheese is melted. Add ½ tsp salt, pinch of pepper, and more to taste.
  5. In the meantime, make the beans. In a small pot, melt butter over medium-low. Drain beans and add to pot. Add salt (only if using “no salt added” beans) and pinch of pepper. Toss to combine and cook for 5 minutes, stirring occasionally. Set aside.
  6. Spread mashed potatoes evenly in baking dish. Scoop green beans onto mashed potatoes and spread evenly, pouring any remaining butter over the dish.
  7. Sprinkle cheddar evenly over the entire dish. (If making ahead, stop here and see notes.)
  8. Bake for 15 minutes. Remove from oven.
  9. Sprinkle fried onions over entire dish. Bake an additional 5 minutes. Serve immediately.
Yield: 1

Cheesy Mashed Potato Green Bean Casserole

Cheesy Mashed Potato Green Bean Casserole

Cheesy mashed potato green bean casserole is the perfect side dish for your next holiday dinner! This recipe is easy to make and it's always a hit with guests. Plus, it's a great way to use up any leftover mashed potatoes you have. So give this casserole a try soon - you won't be disappointed!

Prep Time: 30 minutes
Cook Time: 20 minutes
Total Time: 50 minutes

Ingredients

  • For potatoes:
  • ½ tbsp & ¼ cup unsalted butter
  • kosher salt
  • 2 lbs russet potatoes (about 6 small), peeled and roughly cut into ½-inch cubes
  • ¾ cup shredded mozzarella
  • ½ cup whole milk, room temperature
  • 6 tbsp grated parmesan
  • freshly ground black pepper
  • For green beans:
  • 1 14.5 oz can whole green beans, no salt added
  • 2 tbsp unsalted butter
  • ½ tsp kosher salt (optional)
  • freshly ground black pepper
  • For topping:
  • 1 cup shredded sharp cheddar cheese
  • 1 cup french fried onions

Instructions

  1. Preheat oven to 400 degrees.
  2. Butter a 1.4 liter baking dish (8x2 inches if round, 8x8 if square, 11x7 if rectangle), and set aside.
  3. In a large pot, add potatoes, ½ tbsp butter, 1 tsp salt, and enough water to cover potatoes by an inch. Bring to a boil over medium-high heat, and continue to boil for 15 minutes until cooked through (a fork will go through without resistance). Drain into a separate bowl and mash.
  4. With same pot, reduce heat to medium-low and melt ¼ cup butter. Add mashed potatoes, mozzarella, milk, and parmesan. Stir until cheese is melted. Add ½ tsp salt, pinch of pepper, and more to taste.
  5. In the meantime, make the beans. In a small pot, melt butter over medium-low. Drain beans and add to pot. Add salt (only if using "no salt added" beans) and pinch of pepper. Toss to combine and cook for 5 minutes, stirring occasionally. Set aside.
  6. Spread mashed potatoes evenly in baking dish. Scoop green beans onto mashed potatoes and spread evenly, pouring any remaining butter over the dish.
  7. Sprinkle cheddar evenly over the entire dish. (If making ahead, stop here and see notes.)
  8. Bake for 15 minutes. Remove from oven.
  9. Sprinkle fried onions over entire dish. Bake an additional 5 minutes. Serve immediately.

Notes

If making ahead, stop after step 7. Allow entire dish to cool, then cover loosely with aluminum foil and refrigerate for up to 1 day. When removing from refrigerator, allow to come to room temperature before baking.To reheat leftovers, combine 1 tbsp water per 1 cup of casserole in a nonstick saucepan. Cover and heat on medium low, stirring occasionally, until heated through. Season to taste if necessary.

FAQ and Tips

Cheesy Mashed Potato Green Bean Casserole is usually made with potatoes, green beans, and cheese. Some people also add onions, garlic, or other seasonings. Here are some tips for making this dish:

  • Use starchy potatoes like Russets for the best results. Avoid using waxy potatoes like Yukon Golds.
  • Boil the potatoes in salted water to help them retain their flavor.
  • When mashing the potatoes, add butter and milk for a richer taste. Season to taste with salt and pepper.
  • For extra Cheesy Mashed Potato Green Bean Casserole, add shredded cheese to the mashed potatoes.
  • The green beans can be boiled, steamed, or roasted before adding them to the casserole. Season them with salt and pepper before adding them to the dish.
  • To make a Vegan Cheesy Mashed Potato Green Bean Casserole, use vegan margarine or oil in the mashed potatoes. You can also use vegan cheese in place of traditional cheese.

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