Veggie Sliders with Caramelized Mushrooms

Highlighted under: Inspired Favorites

I absolutely love crafting these veggie sliders with caramelized mushrooms for a satisfying meal that's both delicious and hearty. The earthy flavors and savory spices blend beautifully, making them a favorite among my friends and family. Every time I serve these sliders, I'm met with compliments about the rich taste and the delightful texture. Plus, they're surprisingly easy to prepare! Ready in just a bit over an hour, these sliders are perfect for any gathering or family dinner.

Maeve Colchester

Created by

Maeve Colchester

Last updated on 2026-01-13T03:18:36.555Z

Creating these veggie sliders brought back memories of family barbecues where we always tried to find the best alternatives for meat lovers. I distinctly remember experimenting with mushroom variations and finally landing on caramelized ones for their intense, sweet flavor. Each slider has a perfect balance of ingredients, and I often use a blend of spices to elevate the taste.

One tip I’ve learned is to really take your time with the mushrooms. The longer you caramelize them, the deeper the flavor becomes. Additionally, the choice of buns makes a great difference; I recommend using whole grain for added texture and nutrition. Each bite is a flavor explosion!

Why You Will Love These Sliders

  • Savory caramelized mushrooms that provide a rich, umami flavor
  • Healthy yet satisfying, making them ideal for any meal
  • Versatile sliders that can be enjoyed with many toppings and sauces

The Role of Quinoa and Black Beans

Quinoa and black beans are the heart of these veggie sliders. Quinoa not only adds a nutty flavor but also brings a boost of protein and fiber, making the sliders filling and nutritious. It's essential to cook the quinoa properly; use twice the amount of water to quinoa and simmer until all the water is absorbed, about 15 minutes. This ensures your mixture will hold together well during cooking.

Meanwhile, the black beans contribute a creamy texture that enhances the mouthfeel of each slider. When mashing the beans, aim for a consistency that still has some chunks; this texture provides a pleasant bite and helps bind the sliders without over-relying on breadcrumbs.

Caramelization Techniques for Flavor

Caramelizing mushrooms is a crucial step in elevating the flavor profile of your sliders. Make sure your skillet is hot enough to sauté the mushrooms evenly; medium heat is key to achieving that golden-brown color without burning. If your mushrooms release too much moisture, increase the heat slightly, allowing it to evaporate while the mushrooms brown. Stir occasionally but let them sit long enough to develop those delicious, caramelized edges.

Using balsamic vinegar not only enhances the sweetness of the mushrooms but also adds a tangy depth. You can experiment by substituting balsamic vinegar with red wine vinegar or even soy sauce for a different flavor profile, though this will change the overall taste of the sliders.

Serving Suggestions and Variations

These veggie sliders are incredibly versatile, inviting a range of toppings beyond the standard avocado and arugula. For a spicy kick, consider topping them with pickled jalapeños or a drizzle of sriracha. If you prefer a fresher taste, sliced cucumbers or shredded carrots can add a nice crunch, balancing the richness of the caramelized mushrooms.

If you're looking to prepare these sliders in advance, you can form the patties and refrigerate them for up to 24 hours before cooking. For longer storage, try freezing the uncooked patties between layers of parchment paper in an airtight container. When ready to enjoy, simply thaw in the refrigerator and cook directly from frozen, adding a few extra minutes to the cooking time.

Ingredients

Gather the following ingredients to make these delicious veggie sliders:

For the Sliders

  • 1 cup cooked quinoa
  • 1 cup black beans, mashed
  • 1 small onion, diced
  • 1 clove garlic, minced
  • 1 cup breadcrumbs
  • 1 teaspoon cumin
  • 1 teaspoon smoked paprika
  • Salt and pepper to taste
  • 4 whole grain slider buns

For the Caramelized Mushrooms

  • 2 cups mushrooms, sliced
  • 1 tablespoon olive oil
  • 1 tablespoon balsamic vinegar
  • Salt and pepper to taste

Toppings

  • Avocado slices
  • Fresh arugula
  • Ketchup or aioli

Now that you have your ingredients ready, let's move on to the preparation.

Instructions

Follow these steps to create mouthwatering veggie sliders:

Prepare the Mushrooms

Heat olive oil in a skillet over medium heat. Add sliced mushrooms and sauté until they begin to brown, about 10 minutes. Stir in balsamic vinegar, salt, and pepper, then allow to cook for another 5 minutes until caramelized.

Make the Slider Mixture

In a mixing bowl, combine cooked quinoa, mashed black beans, diced onion, minced garlic, breadcrumbs, cumin, smoked paprika, salt, and pepper. Mix well until everything is combined.

Form the Sliders

Using your hands, form the mixture into even patties that will fit your slider buns. You should be able to make about 4 sliders.

Cook the Sliders

In a non-stick skillet or grill, cook the sliders over medium heat for about 5-7 minutes on each side, until they are heated through and have a nice crust.

Assemble the Sliders

Place each slider on a whole grain bun and top with caramelized mushrooms, avocado slices, and fresh arugula. Add ketchup or aioli as desired.

Your veggie sliders are now ready to be enjoyed!

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Pro Tips

  • For an extra kick, add sliced jalapeños or a sprinkle of your favorite hot sauce on top of the sliders.

Storage Tips

Once cooked, these sliders can be stored in an airtight container in the fridge for up to three days. Reheat them in a skillet over medium heat for a few minutes on each side until warm, ensuring they retain their appealing crust. Alternatively, the sliders can be reheated in the oven at 350°F (175°C) for about 10 minutes, achieving an even texture throughout.

If you have leftover caramelized mushrooms, store them separately in the fridge for up to four days. These mushrooms can be a fantastic addition to other dishes, such as omelets or grain bowls, preventing food waste and adding flavor to your meals.

Scaling the Recipe

This recipe is easily scalable, whether you’re preparing for a small family dinner or a larger gathering. Simply double or triple the ingredients while maintaining the same cooking techniques. Just be cautious not to overcrowd the skillet while cooking the sliders; cook in batches to ensure they get that perfect crust.

For larger events, consider setting up a ‘slider bar’ where guests can customize their toppings. Provide a variety of sauces, like spicy mayo or chipotle aioli, along with additional toppings like sliced radishes or sautéed bell peppers for added flavor and texture.

Questions About Recipes

→ Can I freeze the slider patties?

Yes! You can freeze the uncooked patties for up to 3 months. Just thaw them before cooking.

→ What can I substitute for black beans?

You can use chickpeas or lentils as alternatives if you prefer.

→ Are these sliders gluten-free?

If you use gluten-free breadcrumbs and buns, they can be made gluten-free.

→ How can I add more flavor to the patties?

Consider adding grated cheese or mixing in different herbs and spices to the mixture.

Veggie Sliders with Caramelized Mushrooms

I absolutely love crafting these veggie sliders with caramelized mushrooms for a satisfying meal that's both delicious and hearty. The earthy flavors and savory spices blend beautifully, making them a favorite among my friends and family. Every time I serve these sliders, I'm met with compliments about the rich taste and the delightful texture. Plus, they're surprisingly easy to prepare! Ready in just a bit over an hour, these sliders are perfect for any gathering or family dinner.

Prep Time20 minutes
Cooking Duration40 minutes
Overall Time60 minutes

Created by: Maeve Colchester

Recipe Type: Inspired Favorites

Skill Level: Intermediate

Final Quantity: 4 sliders

What You'll Need

For the Sliders

  1. 1 cup cooked quinoa
  2. 1 cup black beans, mashed
  3. 1 small onion, diced
  4. 1 clove garlic, minced
  5. 1 cup breadcrumbs
  6. 1 teaspoon cumin
  7. 1 teaspoon smoked paprika
  8. Salt and pepper to taste
  9. 4 whole grain slider buns

For the Caramelized Mushrooms

  1. 2 cups mushrooms, sliced
  2. 1 tablespoon olive oil
  3. 1 tablespoon balsamic vinegar
  4. Salt and pepper to taste

Toppings

  1. Avocado slices
  2. Fresh arugula
  3. Ketchup or aioli

How-To Steps

Step 01

Heat olive oil in a skillet over medium heat. Add sliced mushrooms and sauté until they begin to brown, about 10 minutes. Stir in balsamic vinegar, salt, and pepper, then allow to cook for another 5 minutes until caramelized.

Step 02

In a mixing bowl, combine cooked quinoa, mashed black beans, diced onion, minced garlic, breadcrumbs, cumin, smoked paprika, salt, and pepper. Mix well until everything is combined.

Step 03

Using your hands, form the mixture into even patties that will fit your slider buns. You should be able to make about 4 sliders.

Step 04

In a non-stick skillet or grill, cook the sliders over medium heat for about 5-7 minutes on each side, until they are heated through and have a nice crust.

Step 05

Place each slider on a whole grain bun and top with caramelized mushrooms, avocado slices, and fresh arugula. Add ketchup or aioli as desired.

Extra Tips

  1. For an extra kick, add sliced jalapeños or a sprinkle of your favorite hot sauce on top of the sliders.

Nutritional Breakdown (Per Serving)

  • Calories: 350 kcal
  • Total Fat: 12g
  • Saturated Fat: 1g
  • Cholesterol: 0mg
  • Sodium: 300mg
  • Total Carbohydrates: 45g
  • Dietary Fiber: 8g
  • Sugars: 3g
  • Protein: 12g