This Vegetarian Sliders recipe with Portobello Mushrooms and White Cheddar Cheese on King's Hawaiian Rolls are perfect for game day, holiday appetizers, lunch, or dinner. Made with perfectly meaty sauteed mushrooms, melted gooey white cheddar cheese, and warm toasted bread, you'll love this versatile vegetarian sandwich is perfect for a crowd any time of year.
This post is sponsored by the "Game Day Favorites" promotion at Publix. The opinions and text are all mine.
Vegetarian Sliders with Portobello Mushrooms and White Cheddar Cheese
Vegetarian Sliders made with Portobello Mushrooms, and White Cheddar Cheese are the perfect delightful sandwich or snack for game day or any day. Made with King's Hawaiian Rolls, this veggie-based sandwich is a wonderful vegetarian swap for the classic ham and cheese sliders you'll find on lots of party trays. The savory mushrooms marinated in balsamic vinegar, soy sauce, rosemary, and garlic pair perfectly with the melted cheese and toasted bun. I promise you will not miss the meat.
Many game day, party, or holiday spreads don't have a vegetarian slider option, so this simple recipe is a great unexpected addition to the menu. This sandwich is such a rich and tasty combination of flavors. I know even your meat-eating friends or family will enjoy these.
Plus, you can buy the ingredients to make these sliders plus many other essentials for game day at the Publix Game Day Favorites Extra Savings promotion from now until 10/7.Vegetarian Sliders with Portobello Mushrooms and Melty White Cheddar Cheese! Click To Tweet
Why You'll Love These Vegetarian Sliders...
- These Vegetarian Sliders are the perfect veggie-based swap for sliders at your next game day, holiday, or party.
- The savory marinated mushrooms taste gourmet but come together in just 10 minutes on the skillet.
- The rest of the cooking time for these sliders is hands-off in the oven.
- The mushrooms are a great hearty swap for anyone- vegetarian or not.
- They are made on not-torn-apart King's Hawaiian Rolls in a big batch, which allows you to assemble a dozen sliders at a time without a lot of fuss.
- You can put together an entire game day or party spread with these sliders plus some other yummy products available on sale at Publix this week.
Game Day Menu with Vegetarian Sliders
- Vegetarian Sliders with Portobello Mushrooms and White Cheddar Cheese (Made with King's Hawaiian Rolls & Cabot Shredded Cheese)
- Grillo's Pickles Spears & Grillo's Pickles Chips (The BEST store-bought pickles I've ever had!)
- Chips and Mateo's Gourmet Salsa (Also, the best salsa! I always have at least 4 jars in the pantry.)
- Fresh Veggies with a dip made from Hidden Valley Seasoning & Salad Dressing Mix (Just mix it with plain greek yogurt or sour cream for a super easy party dip.
All of these yummy products to complete your game day spread are on sale at Publix until October 7th. Keep reading for the entire sale list to stock your pantry for game day, which includes some fabulous BOGO options and can't-miss deals.
Now that we have our menu, including the Vegetarian Sliders, let’s get an overview of what you need to make them. The full printable recipe is below.
- King’s Hawaiian Rolls: These tender, slightly sweet rolls make the perfect base for Vegetarian Sliders. The cool part about the rolls is they are sold cooked together in one sheet, so you can assemble 12 sandwiches at a time and then cut them or pull them apart after cooking.
- Cabot Sharp Cheddar Shredded Cheese: I love the rich flavor of white cheddar cheese, and Cabot makes the best! I like to use the convenient already shredded packages of cheese for this recipe. Cabot cheese is in a class of its own.
- Portobello Mushrooms: Look for rich sliced portobello mushrooms. You can use the small ones, but I think the larger caps work better for the sandwich, so you don't have tiny pieces of mushroom falling out when you try to eat the sandwich.
- Balsamic Vinegar: The portobello mushrooms need a marinade, and balsamic vinegar gives them that perfect rich flavor you crave.
- Soy Sauce: The second key flavor to getting meaty and rich portobello mushrooms is soy sauce. You don't really get an Asian flavor from it. It just gives the mushrooms a salty and rich flavor. You do not need extra salt in the recipe because of the soy sauce.
- Olive Oil: A little bit of olive oil gives the marinade something to hang on to.
- Dried Rosemary: Dried rosemary is the perfect herb to add more richness to the mushrooms. You can also use fresh if you have it.
- Garlic Powder: I use garlic powder in the marinade to get an even garlic taste on the mushrooms.
- Butter: I like to cook my mushrooms in just a touch of butter. It adds more depth of flavor to the mushrooms. I just use a small amount.
Full instructions for Vegetarian Sliders are below in a printable recipe, but here are the basic steps you'll need to make them. This might look like a long list of instructions, but these come together easily and most of the cooking time is hands-off baking in the oven.
Step 1: Prepare the King's Hawaiian Rolls
- Take a 12-pack of the King's Hawaiian Rolls out of the plastic and remove the white paper around the rolls.
- Do not separate or rip apart the rolls.
- Get a long-serrated bread knife.
- Stand the rolls up on one end and carefully cut the rolls the entire width of the rolls.
- You'll end up with a sheet of the top and bottom of the rolls. Carefully set them on a baking sheet.
Step 2: Prepare the Portobello Mushrooms
- To make the mushrooms for the vegetarian sliders, you'll need to make a marinade to give the mushrooms more flavor. Add the balsamic vinegar, soy sauce, olive oil, rosemary, and garlic powder to a zipper bag or shallow dish. Stir together the marinade. Put the sliced portobello into the marinade and allow them to sit for 15 minutes or up to an hour.
- Add the butter to a large skillet pan. Melt the butter over medium heat and add the portobello mushrooms to the marinade pan.
- Stir and cook the mushrooms until tender, about 5-8 minutes.
Step 3: Assemble and Bake the Vegetarian Sliders
- Next, you assemble the vegetarian sliders. Set the cut rolls on a baking sheet.
- Layer half of the shredded cheese on the bottom half of the rolls.
- Use tongs to pull the mushrooms out of the saucy mixture and put a layer of mushrooms on the cheese. You do not want extra sauce in the sandwich. It can get soggy.
- Layer the second half of the cheese on top.
- Cover the cheese and mushroom mixture with the top of the rolls. Put the top of the rolls on top.
- Cover and bake for 15-20 minutes or until the buns are toasted and the cheese is melted. The melty cheese in these is so good!
Step 4: Cut the Vegetarian Sliders
- Remove from the oven.
- Following the lines of the rolls, cut the vegetarian sliders into individual sandwiches.
Here's what the Vegetarian Sliders look like after cutting. Isn't that a fabulous way to prepare a bunch of sliders easily? You can do this with so many different combinations of topping for sliders. This is such a great party hosting hack.
I love these vegetarian sliders as written, but here are some fun variations to try.
- Mix Up the Veggies: This recipe features just portobello mushrooms, but you could also do something similar with other veggies like bell pepper, zucchini, onion, tomatoes, or eggplant.
- Make it Meaty: I love making these vegetarian, but you can make these with slices of turkey or ham with melted cheese.
- Mix Up the Spices: Switch out the rosemary for Italian Seasoning, Mexican Spice Mix, or Herbs de Provence.
- Make Vegan Slider: Swap out the cheese and butter for dairy-free cheese and butter.
- Add Greens: Add some extra vitamins and color by opening the sandwich after cooking and adding some fresh arugula.
- Double it Up: You can easily double this recipe and make it with a 24-package of King's Hawaiian Rolls.
How do I store leftovers of Vegetarian Sliders?
These sliders are best enjoyed fresh out of the oven because of the melted cheese, but you can store leftovers in an airtight container in the fridge for up to three days. Reheat in the oven at 350 degrees, covered, until warm.
What goes with sliders?
There are so many game-day essentials that can go with sliders, and many of them are on sale at Publix this week. From now until October 7th you can stock up on all of these essentials for your next game day party on sale. Here are the deals.
- King's Hawaiian Rolls - 12-ct package for $3.99, 24-ct for $7.99
- Cabot Shredded Cheese
- Mateo's Gourmet Salsa - $3.99
- Hidden Valley Seasoning & Salad Dressing Mix - Buy one, get one free
- Grillo's Pickles Spears or Chips - $5.99
Read the complete list of items on sale here!
These Vegetarian Sliders are so Good!
Vegetarian Sliders are perfect if you are looking for a yummy and unique to serve at your next party. I seriously love that you can make them in a big batch to save time! The rich and savory flavors and the meaty texture of the mushrooms are perfect for anyone, including vegetarians.
Plus, who doesn't love cute little sandwiches? Give this yummy slider recipe a try and let me know what you think.
More Side Dish Ideas:
- Grilled Sweet Potato Wedges
- Everything Bagel Sweet Potato Chips
- Healthy Greek Yogurt Cole Slaw
- Zesty Italian Pasta Salad
- Cheesy Ranch Potatoes
- Homemade Guacamole
Vegetarian Sliders with Portobello Mushrooms and Melty White Cheddar Cheese! Click To Tweet
More Vegetarian Sandwiches to Try:
- Grilled Vegetable and Herbed Goat Cheese Sandwich
- Southwest Black Bean Burgers
- Buffalo Chickpea Burgers
- The Best Portobello Mushroom Burger
Vegetarian Sliders with Portobello Mushroom & White Cheddar
- Add the balsamic vinegar, soy sauce, olive oil, rosemary, and garlic powder to a storage bag or shallow dish. Stir together the marinade. Put the sliced portobello into the marinade and allow them to sit for 15 minutes or up to an hour.
- Preheat the oven to 350 degrees.
- While the oven is preheating, add the butter to a large pan. Melt the butter over medium heat, add the portobello mushrooms with the marinade the pan.
- Stir and cook the mushrooms until tender, about 5-8 minutes.
- While the mushrooms are cooking, use a sharp, serrated bread knife to cut the King's Hawaiian Rolls in half. Do not separate them into individual rolls. Set the rolls on a baking sheet.
- Layer half of the shredded cheese on the bread.
- Use tongs to pull the mushrooms out of the saucy mixture and put a layer of mushrooms on the cheese. You do not want extra sauce in the sandwich.
- Layer the second half of the cheese on top.
- Cover the cheese and mushroom mixture with the top of the rolls.
- Cover and bake for 15-20 minutes or until the buns are toasted and the cheese is melted.
- Remove from the oven. Following the lines of the rolls, cut the vegetarian sliders into individual sandwiches.
Pin for later