There are dinners… and then there are dinners. The kind that coax people out of their rooms by scent alone. The kind that make you go back for seconds even when you swore you were full. The kind that taste like fall evenings, cozy slippers, and the golden light of 5:00 p.m. hitting just right on your kitchen counter. Darling, that dinner is Tater Tot Casserole.
Now I know what you’re thinking: “Tater tots? Isn’t that kid food?” And to that I say yes. And it’s glorious. But trust me, this is not the dry, beige cafeteria food of your childhood. This is what happens when crispy potato nuggets get dressed up for dinner with sharp cheddar, crispy bacon, creamy homemade ranch dressing, and a sprinkle of fresh herbs. It’s a grown-up glow-up, and I’m so here for it.
So grab your softest apron, light a candle if you’re feeling extra, and let’s dive into this hearty, nostalgic dish that’s equal parts comfort and culinary triumph. Because as far as weeknight dinners go, this one checks all the boxes: easy, flavorful, indulgent, and just fancy enough to make your guests think you went to culinary school (when in reality, you were shredding cheese in slippers).
Let’s Talk Ingredients (A.K.A. Why This Casserole Is A Hug In A Dish)
Before we even preheat the oven, let’s gather our key players:
- Bacon – Salty, crispy, magical. Bacon is the base note of this flavor symphony.
- Cheddar Cheese – Melted, gooey, and delightfully sharp. Use a semi-sharp cheddar for balance.
- Onions and Scallions – Because layering flavors is what separates casseroles from chaos.
- Tater Tots – The crispy crown jewels of this dish.
- Sour Cream & Whole Milk – To add that creamy, luscious texture that coats every bite.
- Fresh Dill and Chives – For brightness and a touch of “Look at me, I’m homemade.”
- Butter & Flour – Our roux dream team. Thickening magic incoming.
- Homemade Ranch Dressing – The drizzle that takes this from “yummy” to “what even is this sorcery?!”
Step 1: Get Preppy with the Prep (It’s Not Called Preppy Kitchen for Nothing)
We start this casserole by showing a little love to our ingredients:
1. Rough-Chop the Onion
You’ll want about 1 cup of yellow onion, chopped. This is not the time to practice your fine dice. Rustic is the vibe here. The onions will melt into the sauce and add depth, not crunch.
2. Slice the Scallions
Take about 1 cup of scallions or green onions. Remove any sad, withered bits (we’ve all been there) and chop them up. Set half aside for the sauce, half for the topping.
3. Shred the Cheese
Three cups of cheddar (about 12 oz) should do the trick. If you’re a cheese rebel, swap in Jack, Colby, or even a cheeky Gruyère. But whatever you do, shred it yourself. The pre-shredded stuff has anti-caking agents, and we want melt-in-your-mouth, not mystery-dust coating.
4. Snip the Herbs
A generous tablespoon each of chopped fresh dill and chives gives this casserole the kind of bright, herby zing that cuts through all the creamy, cheesy glory. It’s like a little green refresh button.
5. Chop the Bacon
Eight slices of bacon, cut into one-inch pieces. Think “bite-sized happiness.” More if you’re a snacker (and let’s be honest you are).

Step 2: Build the Flavor Base (Or: Let the Bacon Do the Work)
Get out your Dutch oven or a large pot (something with heft, darling). Over medium heat, toss in the bacon no need to preheat the pan. Let it all warm up together and do a little bacon dance.
Cook for about 10 minutes, stirring occasionally so the pieces don’t clump together into some kind of porky megazord. Once golden and just crispy, fish out the bacon and place it on a paper towel-lined plate or cooling rack. If a few pieces “accidentally” get eaten, I won’t judge. In fact, I salute you.
Drain the pan, leaving about two tablespoons of that glorious bacon fat behind. The rest you can save for eggs tomorrow (or just whisper “thank you” and let it go).
Step 3: Onions, Butter, Flour – Oh My!
To your reserved bacon fat, add the chopped yellow onion and two tablespoons of butter. Cook over medium heat for about five minutes, until the onions are soft and beginning to look a little translucent and a lot delicious.
Now, sprinkle in two tablespoons of flour. Stir it in and cook for another two minutes to form a quick roux. This is our creamy sauce base. It’s what brings the whole casserole together in one dreamy spoonful.
Step 4: Make the Sauce Creamy and Glorious
Pour in 1¼ cups (about 300 mL) of whole milk. Stir until it’s smooth, and turn off the heat. We’re not trying to boil anything just a gentle heat to marry the flavors.
Now comes the fun part: stir in half the shredded cheddar cheese, half a cup of sour cream, and half of the chopped scallions. This is your flavor jackpot creamy, tangy, cheesy, oniony. Stir it like you mean it.
And now, the tater tots! Toss in 16 oz (half a standard 32 oz bag) of frozen tater tots. Don’t worry, they don’t need to be thawed. They’ll soak up the flavor like spongy potato angels.

Step 5: Assemble and Bake (A.K.A. It’s Happening!)
Get your 9×13-inch baking dish ready preferably something beautiful enough to serve from. Pour your luscious, creamy, cheesy mixture into the dish. Smooth it out like frosting a very beige cake.
Top with the remaining 16 oz of tater tots, arranging them in a single layer. (You can be meticulous and line them up, or toss them on like you’re feeling wild and free.) Sprinkle the remaining cheese over the top, then crown it all with the reserved bacon.
Into the oven it goes! Bake at 350°F (175°C) for about 35 minutes, or until it’s golden, bubbling, and you can hear it whispering, “Eat me…”
Step 6: Homemade Ranch Dressing (Because We’re Fancy)
While your casserole works its magic in the oven, let’s whip up a little homemade ranch to drizzle over the top like the rockstar home cook you are.
In a medium bowl, combine:
- ¼ cup sour cream
- 2 tbsp milk
- The rest of your fresh dill and chives
- A generous pinch of salt and pepper
Whisk it all together until it’s smooth and creamy. Taste and adjust seasoning, then set it aside for the grand finale.
Pro tip: You can spoon it over the casserole or pipe it on with a piping bag like a kitchen show-off. Just be warned those herbs like to clog things up. Been there.
Step 7: The Big Reveal (Cue Applause)
Once your casserole is golden, bubbling, and making every corner of your house smell like a dream, pull it out of the oven. Let it sit for a few minutes (good things come to those who wait).
Sprinkle the top with your remaining scallions, then drizzle with ranch. And don’t be shy this is the flavor crown jewel, after all.
Plate it up and take in that first forkful: crispy, cheesy tater tots; savory bacon; creamy sauce; fresh herbs; tangy ranch. It’s everything you love about comfort food, but better. Like a baked potato casserole went to finishing school and came back fluent in flavor.

Tater Tot Casserole
Ingredients
- 8 slices bacon, chopped
- 1 cup yellow onion, chopped
- 1 cup scallions (green onions), chopped
- 3 cup shredded cheddar cheese (about 12 oz)
- 1 tablespoon fresh dill, chopped
- 1 tablespoon fresh chives, chopped
- 2 tablespoon unsalted butter
- 2 tablespoons all-purpose flour
- 1 1/4 cups whole milk
- 1/2 cup sour cream (plus 1/4 cup for ranch)
- 1 (32 oz) bag frozen tater tots, divided
- Salt & pepper to taste
Homemade Ranch Dressing
- ¼ cup sour cream
- 2 tablespoons milk
- Chopped dill & chives (from earlier)
- Salt & pepper to taste
Instructions
- Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- In a large Dutch oven, cook bacon over medium heat until crispy. Remove and drain on paper towels.
- Reserve 2 tablespoons of bacon fat in the pot. Add chopped onion and cook 5 minutes until translucent.
- Stir in butter and flour. Cook 2 minutes, then slowly add milk and stir until thickened.
- Add half the cheddar, sour cream, and half the scallions. Stir to combine.
- Fold in 16 oz of the frozen tater tots.
- Transfer mixture to baking dish. Top with remaining tater tots, cheese, and bacon.
- Bake for 35 minutes or until golden and bubbly.
- While baking, whisk together ranch dressing ingredients.
- Once casserole is done, drizzle ranch on top and sprinkle with remaining scallions.
A Few Notes from the Casserole Queen
- Make-Ahead Tip: You can prep everything up to the baking step and refrigerate it covered for up to 24 hours. Bake when you’re ready, adding 5–10 minutes to the cooking time.
- Vegetarian Swap: Skip the bacon, use olive oil or butter for the sautéing, and add sautéed mushrooms or roasted broccoli for that umami depth.
- Freezer Friendly: Yep! Bake, cool, and freeze. Reheat covered at 350°F until hot and bubbly.

In Conclusion: Tater Tot Casserole Is Your New Weeknight Wonder
I know there are a million casserole recipes floating around the internet, but this one? This one is different. It’s nostalgic yet elevated. Easy but impressive. Casual, cozy, and deeply satisfying.
It’s the kind of dish that makes people ask for the recipe before dessert is even on the table. It’s perfect for potlucks, chilly nights, Sunday dinners, and Tuesdays when the only thing getting you through the day is the thought of bacon and cheese.
So go on make this casserole. Share it. Savor it. And if you find yourself spooning cold leftovers straight from the pan the next day? Well, you’re in very good company.
Bon appétit, my casserole-loving friends. Until next time stay cozy, cook boldly, and don’t forget the ranch.