Caramelized Onion and Portobello Mushroom Sliders with Fry Sauce
If you’re looking for a delicious and satisfying slider that brings together the savory richness of caramelized onions and the earthy flavor of portobello mushrooms, look no further! These Caramelized Onion and Portobello Mushroom Sliders with Fry Sauce are a game changer. Perfect for parties, casual gatherings, or even a cozy dinner at home, these sliders are easy to make and incredibly flavorful. The combination of sweet, caramelized onions, meaty mushrooms, and a creamy, tangy fry sauce will have everyone coming back for seconds. Let’s dive into this mouthwatering recipe!
Top Reasons to Make Caramelized Onion and Portobello Mushroom Sliders with Fry Sauce
- Flavor Explosion: The sweetness of caramelized onions paired with the umami of portobello mushrooms creates a delightful combination that excites the taste buds.
- Easy to Prepare: With just a few simple ingredients and steps, these sliders can be whipped up in no time, making them perfect for both novice and experienced cooks.
- Customizable: Feel free to play around with the toppings and sauces to suit your taste preferences!
- Great for Any Occasion: Whether it’s game day, a barbecue, or a weeknight dinner, these sliders are sure to impress your guests.
- Vegetarian-Friendly: A delicious option for vegetarians and anyone looking to reduce their meat consumption.
Ingredient List
- 1 medium sweet Vidalia onion or yellow onion, peeled and sliced
- 2 to 3 tablespoons olive oil, divided
- 4 ounces sliced baby portobello mushrooms
- 1 cup diced Vlasic Farmers Garden Bread and Butter Chip pickles
- 1 teaspoon pickle juice
- 6 slider buns or Hawaiian rolls
- ½ cup ketchup
- ½ cup mayo or Miracle Whip (use vegan mayo to keep vegan)
- About 3 teaspoons pickle juice, or to taste
- Pinch onion powder, optional and to taste
Appliances & Accessories
- Skillet or Pan: For caramelizing the onions and sautéing the mushrooms.
- Spatula: To stir and flip the ingredients as they cook.
- Measuring Cups and Spoons: For accurate ingredient measurement.
- Serving Platter: To display your delicious sliders when ready to serve.
Caramelized Onion and Portobello Mushroom Sliders with Fry Sauce: Step-by-Step Guide
Step 1: Prepare the Onions
Start by heating 1 tablespoon of olive oil in a skillet over medium heat. Add the sliced Vidalia or yellow onion and a pinch of salt. Cook slowly, stirring occasionally, for about 20-25 minutes until the onions become soft and caramelized. Lower the heat if necessary to prevent burning.
Step 2: Sauté the Mushrooms
Once the onions are caramelized, add another tablespoon of olive oil to the skillet. Add the sliced portobello mushrooms and sauté for about 5-7 minutes, or until they are tender and golden brown. Season with salt and pepper to taste.
Step 3: Prepare the Fry Sauce
In a small bowl, combine the ketchup, mayo (or vegan mayo), and pickle juice. Mix until well combined. Taste and adjust the pickle juice to your preference. If desired, add a pinch of onion powder for extra flavor.
Step 4: Assemble the Sliders
Slice the slider buns in half. On the bottom half of each bun, place a generous spoonful of the caramelized onion mixture, followed by a few pieces of sautéed mushrooms. Top with a spoonful of diced pickles. Drizzle with the fry sauce and place the top half of the bun on each slider.
Step 5: Serve and Enjoy!
Arrange the sliders on a serving platter and serve immediately. These sliders are best enjoyed fresh but can also be served with a side of fries or a crisp salad.
Seasonal Twists
- Fall Flavor: Add a slice of aged cheddar or gouda cheese to the sliders for a rich, creamy addition.
- Summer Vibes: Incorporate fresh herbs like basil or arugula for a burst of freshness and color.
- Spicy Kick: Add jalapeños or a spicy aioli to the fry sauce for those who enjoy a little heat.
- Holiday Special: Top with cranberry sauce for a festive twist during the holiday season.
Cook’s Notes
Caramelizing onions takes time but is well worth the effort. The longer you cook them, the sweeter and tastier they become. If you’re short on time, you can sauté the onions on a higher heat, but make sure to stir frequently to prevent burning.
- Feel free to substitute the portobello mushrooms with any other type of mushroom you prefer.
- If you want to make this dish gluten-free, use gluten-free slider buns.
- For a healthier option, you can use Greek yogurt instead of mayo for the fry sauce.
Keep-It-Fresh Plan
These sliders are best enjoyed fresh, but you can store any leftovers in an airtight container in the refrigerator for up to 2 days. Reheat in the oven or skillet to restore some of the original texture before serving again. The fry sauce can also be made in advance and stored in the fridge for up to a week.
Popular Questions
Can I make these sliders ahead of time?
Yes! You can prepare the caramelized onions and sautéed mushrooms in advance. Store them in the refrigerator and assemble the sliders just before serving for the best texture.
What can I serve with these sliders?
These sliders pair wonderfully with sweet potato fries, a fresh garden salad, or even a side of coleslaw for a satisfying meal.
Can I freeze these sliders?
While it’s best to enjoy them fresh, you can freeze the cooked mushrooms and onions separately. Reheat them before assembling the sliders.
Is the fry sauce customizable?
Absolutely! Feel free to adjust the ingredients in the fry sauce to your taste. You could add hot sauce, garlic powder, or even a dash of smoked paprika for a unique flavor profile.
That’s a Wrap
These Caramelized Onion and Portobello Mushroom Sliders with Fry Sauce are a delightful treat that everyone will love. The combination of sweet and savory flavors, along with the creamy fry sauce, makes these sliders a must-try. Whether you’re hosting a gathering or simply craving something delicious, this recipe is sure to become a favorite in your household. So gather your ingredients, follow the steps, and get ready to enjoy a slider experience like no other!
Caramelized Onion and Portobello Mushroom Sliders with Fry Sauce
Ingredients
Equipment
Method
- Start by heating 1 tablespoon of olive oil in a skillet over medium heat. Add the sliced Vidalia or yellow onion and a pinch of salt. Cook slowly, stirring occasionally, for about 20-25 minutes until the onions become soft and caramelized. Lower the heat if necessary to prevent burning.
- Once the onions are caramelized, add another tablespoon of olive oil to the skillet. Add the sliced portobello mushrooms and sauté for about 5-7 minutes, or until they are tender and golden brown. Season with salt and pepper to taste.
- In a small bowl, combine the ketchup, mayo (or vegan mayo), and pickle juice. Mix until well combined. Taste and adjust the pickle juice to your preference. If desired, add a pinch of onion powder for extra flavor.
- Slice the slider buns in half. On the bottom half of each bun, place a generous spoonful of the caramelized onion mixture, followed by a few pieces of sautéed mushrooms. Top with a spoonful of diced pickles. Drizzle with the fry sauce and place the top half of the bun on each slider.
- Arrange the sliders on a serving platter and serve immediately. These sliders are best enjoyed fresh but can also be served with a side of fries or a crisp salad.
Notes
- Caramelizing onions takes time but is well worth the effort.
- Feel free to substitute the portobello mushrooms with any other type of mushroom you prefer.
- If you want to make this dish gluten-free, use gluten-free slider buns.
- For a healthier option, you can use Greek yogurt instead of mayo for the fry sauce.
