Mushroom Swiss Burger Casserole
This Mushroom Swiss Burger Casserole has all the flavors of the classic pub burger, except in comforting casserole form! It's an easy dinner to get on the table during the week, no grill required.

I came up with this recipe one day when I needed to use up some mushrooms. It tastes just like a Mushroom Swiss Burger, but maybe better since it's topped with tater tots instead of a bun!
The meat filling is created with traditional hamburger ingredients I always have on hand - ketchup, mustard, onion. I also included Worcestershire sauce to give it a wonderful robust, savory flavor. It all comes together with some Swiss cheese. If you don't have Swiss on hand, cheddar would also be tasty!
Speaking of substitutes, if you don't have tater tots in your freezer, french fries, hash browns or leftover mashed potatoes will work just as well. The key to easy dinners is using what you've got.
Even kids will love this dinner if you chop the mushrooms up very small. I'm always a fan of what I call the "veggie sneak." I don't have any children yet, but I use it on my husband to increase our vegetable intake. He's none the wiser, but definitely healthier! 🙂
~ Mushroom Swiss Burger Casserole ~
Mushroom Swiss Burger Casserole
All the flavors of your favorite pub burger in an easy casserole! With standard pantry staples, this meal comes together in a flash.
Ingredients
- 1 lb ground beef
- 8oz button or cremini mushrooms, sliced
- ½ cup of diced onion
- ½ cup ketchup
- 2 teaspoons Worcestershire sauce
- 1 teaspoon mustard
- 1 teaspoon salt
- ¼ teaspoon black pepper
- ¼ teaspoon garlic powder
- ½ cup (2oz) Swiss cheese
- ¼ bag (about ½ lb) frozen tater tots







This dish was absolutely Delicious! I added a bit more shredded Swiss but otherwise followed the recipe for this easy 2 night dish!
Yum! What an inventive reworking of a classic 🙂
Thank you, Kate!
Oh I love the look of this! Hungry Hubby would love it too. We can't get tots here so I'd have to improvise but this is very much a recipe I would love to eat 😀
Tots must be a very American thing! What about frozen french fries? This would actually be delicious with rosemary potato wedges.
Worcestershire Sauce livens up so many meals! My kids would love you for serving Tater Tots! We are definitely fans of 'sneaky veg' here too.
Yes, Worcestershire sauce is like magic!
What a great idea! Combining tasty ingredients to make a whole new dish is very creative!! And mushrooms? We always have them on hand.
Thank you, Marisa!
That's a great recipe to use for leftover mushrooms. I love the addition of tater tots, very unique and yes more fun than a bun!
Love the idea of topping this with tater tots! I wish we could get them in the UK.
No tots in the UK? How sad! I bet mashed potatoes or potato wedges would taste just as yummy. 🙂
@Becca @ Amuse Your Bouche, use McDonald’s hash browns…you have McDonald’s in the UK, yes?
Don't you love how great recipes are created when you need to get rid of some leftovers? This sounds really nice: I love casseroles like this! I really think I have to get myself some Worcestershire sauce, too.
Some of the best recipes are invented that way! Thank you, Vivian.