Roast Beef Grilled Cheese Sandwich with Caramelized Onions, Peppers and Horseradish

Roast Beef Grilled Cheese Sandwich

While I still had some of the leftover roast beef the other week, I made sure to make a few roast beef grilled cheese sandwiches! This has to be one of my favourite ways to enjoy roast beef leftovers and it gave me the perfect opportunity to update this recipe and to add a new photo (see above). Although simply throwing the roast beef into a sandwich with some cheese and grilling it would be great, I like to add sauteed onions and peppers to bring in some new flavours and textures. There are a lot of cheeses that go really well in this sandwich such as swiss, provolone, mozzarella and this time I went with a sharp cheddar. Of course a touch of horse radish is always welcome and if you have any gravy left over from the roast beef dinner, adding a bit inside the sandwich is good and then serving the rest for dipping is even better! Leftover roast beef is such a magical thing!

Roast Beef Grilled Cheese Sandwich with Caramelized Onions, Peppers and Horseradish

Moist and tender roast beef along with sauteed onions and peppers in grilled cheese form is a truly decadent way to enjoy your leftovers! A touch of horseradish gives this sandwich a bit of bite and if you have any gravy leftover feel free to use it for dipping!

Servings: makes 1 sandwich

Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes

Printable Recipe
  • 1/2 tablespoon oil
  • 1/2 onion (sliced)
  • 1/4 bell pepper (sliced)
  • 2 slices roast beef
  • 2 slices swiss or provolone or mozzarella cheese
  • 1/2 tablespoon horseradish
  • 1 tablespoon gravy
  • 1 tablespoon butter, room temperature
  • 2 slices bread
  1. Heat the oil in a pan.
  2. Add the onion and saute until tender, about 5-7 minutes.
  3. Add the bell pepper and saute until tender, about 5 minutes.
  4. Assemble sandwich and grill until golden brown and the cheese has melted, about 2-4 minutes per side.

How to Make the Perfect Grilled Cheese Sandwich

Similar Recipes:
Roast Beef Quesadillas
Philly Cheese Steak Sandwich
Pot Roast Sandwich Smothered in Gravy with Melted Swiss Cheese and Horseradish Mayonnaise
BBQ Roast Beef and Cheddar Sandwich
Black and Blue Steak Sandwich
Roast Beef Sandwich with Caramelized Onions and Grainy Mustard, Horseradish Mayo
Corned Beef Grilled Cheese Sandwich with Guinness Caramelized Onions
Gyro Grilled Cheese Sandwich (aka Gyro Melt)

The 10 Best Grilled Cheese Sandwiches


Cyndi said...

You always seem to cook what I'm craving! Try this if you have any more roast beef - make a grilled cheese using the beef with pepper jack cheese. On sourdough. Makes me drool. Love your recipes, Kevin.

Julie said...

That's seriously awesome!

Gabby said...

That looks SO good!

Ninette said...

Wish I had some of that sandwich here!

Jenn said...

I love how stuffed this sandwich looks. Grill the cheese and pile on the beef. Sounds like a good idea to me.

Memória said...

I love how yummy your bread always looks! I love roast beef sandwiches!

Rosa's Yummy Yums said...




Michelle said...

Now I'm hungry. Looks delicious.

Christina said...

Roast beef is my favorite deli meat, but oddly I've never had it on a hot, grilled sandwich! Great idea, this looks like a delicious combination.

♥peachkins♥ said...

mouthwatering sandwich!!!

Nina Timm said...

Kevin, I know exactly what you should do with your life.......of course open a bistro with a killer "take-aways" on the side!!! Come on, what's stopping you!!!!

Joanne said...

What a mouth-wateringly good sandwich! I love seeing what you do with leftovers. You are always so inventive.

OK Chick said...

Oh man that looks good.

velva said...

Another fabulous recipe post! Just love it!

Ivy said...

I am not a big fan of beef but now I am craving your beef and cheese sandwich!!

Pam said...

Look at all that oozing cheese. This sandwich looks delicious Kevin!

Bridgett said...

This is definitely crave-worthy. Yum!

Dodol & Mochi said...

Dear Kevin,

I've just passed an award on to you. Feel free to come and pick it up over on my blog if you'd like to:

Btw, I've been following your blog for almost three years! Keep it up, man!

Cheers from Malaysia!


Muneeba said...

Sometimes I wish I could go directly to leftovers! This sandwich is making me salivate Kevin ... it's definitely crave-worthy!

teresa said...

oh my gosh, my mouth is just watering looking at the picture. amazing, fantastic way to use leftovers!

Evie said...

Now that's what you call a sandwich!

Lea Ann said...

This looks unbelievable! yum

biz319 said...

Love the addition of a touch of gravy Kevin! :D

Have a great weekend!

mirela said...

I shall make this over the weekend!!!!

Debbie said...

This looks incredible, I can't wait to give it a try. I still have your philly cheese steak sandwich on my list of things to try. I need to put my magazines away and start trying out some of these amazing recipes you are posting.

Gloria said...

WOW! Kevin yours sandwich are always amazing and so tasty!!
Makes me drool ..always. And I will say : delicious picture!!! gloria

Chris said...

Nice sandwich combination there! And yes, horseradish is a must for roast beef!

Jennifer (Savor) said...

oh my...I would never have thought of this but then again, it really is like a twist on the philly steak N cheese eh?

Spryte said...

Love Love Love sandwiches and that looks great!

The Paraplegic Chef said...

Wow! I just found your blog through google! I have a cooking blog as well, you should check it out!

Belle (tinkeringinthekitchen) said...

this looks yummy!

Ritsin said...

Equally good with leftover turkey just substitute a bit of cranberry sauce for the horseradish!

PS Just noted the date of your posting, boy this month has flown by. ;-)

Ritsin said...

Equally good with leftover turkey. Just substitute a bit of cranberry sauce for the horseradish sauce.

BTW, just noticed the date of your posting. Boy this month has flown by. ;-)

Yadsia @ShopCookMake said...

That's an epic grilled cheese

Bobby said...

Wow, this grilled cheese looks amazing. I love the idea of using the gravy for dipping.

Pam said...

Messy, gooey, and delicious - my kind of sandwich!!!

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