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Yes, you can actually pull together a delicious, nutritious, and easy dinner with just a few pantry staples! Skip a trip to the grocery store and use what’s already in your kitchen to serve your family this cozy 3-Ingredient Tuna Casserole at the end of a busy fall day!
Well, here we are…right smack in the middle of September! So long summer vacations, and hello back-to-school routines! I must admit — I’m enjoying every minute of the quieter house, cooler temps, and structured days. My boys do so much better with a predictable schedule (and so do I)!
While our summer was packed full of fun adventures, we’ve gladly slipped right back into the busy weeknight routine of homework, multiple sports practices, and simple family dinners! Although, honestly, we could do without the homework…
A Family Favorite Recipe
This 3-Ingredient Tuna Casserole recipe originally came from a reader named Sam, who was a member of the 5-Day Meal Planning Challenge that I hosted about a month ago. We were sharing some of our go-to weeknight meals in the Facebook group and Sam mentioned that this is one of her family’s favorites.
I instantly knew that it would be a hit with my own crew of mac-and-cheese lovers, so I gave it a try the very next week. I had everything in my kitchen and I didn’t even need to run to the grocery store!
The tuna casserole was obviously a great success around our dinner table, so Sam said that I could share it with YOU as well! After all, when we’re knee-deep in the hustle of back-to-school season, we could all use a simple one dish comfort food meal to make our lives just a little bit easier!
Sam’s original recipe calls for just 3 ingredients: Horizon Organic Cheddar Cheesy Deluxe Mac and Cheese, a bag of frozen peas, and a couple of cans of tuna. That’s it! You get carbs, protein, and veggies all in one dish — so you don’t even have to worry about the sides!
This is my boys’ #1 favorite mac and cheese on the market, which is why I recently stocked up when the boxes were on sale at my local grocery store (2 for $5).
Since Horizon’s mac and cheese is made with organic pasta and organic cheese, It’s an affordable dish that I can feel good about feeding my family. Plus, the delicious taste even encourages my boys to eat their seafood and veggies! Anything coated in that cheesy, creamy sauce is bound to be amazing!
How To Make This Tuna Casserole
The mac and cheese, tuna, and peas are combined in a large dish, covered with foil, and baked in the oven (just until the peas are heated through and the casserole “sets”).
Since my Great Aunt Bee always puts a buttery crumb topping on her tuna casserole, I decided to do the same! This step is totally optional (and it’s not part of Sam’s original 3-ingredient recipe), but I think it makes the dish just a little bit more special.
Melted Horizon Organic Butter and a bit of Panko bread crumbs add just the right touch on top!
I hope that you enjoy this simple, wholesome, and easy weeknight dinner — just in time for fall comfort food, busy back-to-school evenings, and precious family time together around the table!
Cooking for Two?
This is a very easy recipe to cut in half! Use one box of mac and cheese, one can of tuna, and half a bag of peas. Bake the casserole in an 8-inch square dish. Cooking instructions remain the same.
More Casserole Recipes You Might Like;
- Chicken Broccoli and Rice Casserole
- Dump and Bake Ravioli Casserole
- Dump and Bake Cheesy Ham and Potato Casserole
- Southern Squash Casserole
3-Ingredient Tuna Casserole
- 2 10 ounce boxes Horizon Organic Cheddar Cheesy Deluxe Mac and Cheese
- 2 5 ounce cans tuna in water, drained and flaked with a fork
- 1 16 ounce bag frozen peas (not thawed)
- Optional topping: ½ cup Panko breadcrumbs combined with 2 tablespoons melted Horizon Organic butter; sliced green onions
- Preheat oven to 350F (180C). Spray a 9 x 13-inch baking dish with cooking spray and set aside.
- Prepare both boxes of mac and cheese according to package instructions. Gently fold in tuna and peas. If the mixture seems a bit dry, add a splash of Horizon Organic milk until it reaches the desired consistency.
- Pour mac and cheese mixture into prepared baking dish. Cover with foil and heat in the oven for about 10 minutes, or until completely heated through.
- Remove foil and sprinkle with buttered breadcrumbs, if desired. Return to the oven (uncovered) for 5 more minutes, or until topping is golden brown. Garnish with sliced green onions.
This is a sponsored conversation written by me on behalf of Horizon. The opinions and text are all mine.
I can’t believe it’s almost mid September! I am enjoying the cooler temps and fall, too. And this tuna casserole looks amazing! Definitely one of my favorites from childhood! I’m loving that this is just three ingredients. I’ve got to try this, and soon!
Yep, this casserole is totally a blast from the past (in the BEST way)! 🙂
Thanks for not forgetting about the single household folks and providing the cooking for 2 comments on all of your recipes! 🙂 This is super easy and yum looking too!
Oh, you’re so welcome, Ashley. I’m glad that you find it helpful! I have a lot of readers that are cooking for just one or two, so I aim to please! 🙂
Thank you so much for sharing this awesome recipe ! It is super-easy (which is what l like !) , has basic ingredients and and oh-so-tastey ! I made it last night as my Kraft Dinner (Canada)-fan-daughter was joining me for supper . When she came in she was totally confused when she saw a KD box , a can of tuna and a bowl of frozen peas on the cupboard ! Lol !! I made the 1/2 version , topped with the optional breadcrumbs and served with a salad . There was plenty and of leftovers…gotta love leftovers ! This recipe is definitely a keeper and will be making it again soon . ????
I’m so glad that you enjoyed it, Cindy!! Thanks for letting me know! 🙂
Have you ever made this with diced chicken?
Hi, Linda! No, I haven’t — but I’m sure it would be delicious! I would use an equal amount of cooked, diced chicken and follow the exact same cooking instructions. 🙂
It’s Ash Wednesday and this is perfect for dinner. It’s always been one of my husband’s favorites. Married 60 years and still going strong. Thanks boo
Yes, Kay — you’re right, this is perfect for Ash Wednesday!
Congrats on 60 years of marriage, too. That’s AMAZING! 🙂
Delicious and very easy too make .
What an easy recipe and it sounds so comforting and delicious!
I have tried your tuna casserole and it is great that you have made dinner more easier then normal mrala.
It would be a good idea for dinner some time this next week I have to cook dinner for the family next week
Delicious and very easy too make .
Thank you, Cassidy!
What other vegetable besides peas would you recommend. A family member does not like peas.
Hi, Dot! You can use almost any veggies that you like. If you’re using larger vegetables like broccoli florets, green beans or carrots, you will likely want to steam or boil them until they’re crisp-tender before adding them to the dish. Otherwise you’ll end up with crunchy vegetables. Corn would also work — no pre-cooking necessary. Enjoy!