The Mushroom Panini and Mushroom Sub Sandwich offer a delightful twist on classic sandwich fare, combining rich, savory mushroom filling with fresh, complementary ingredients. These recipes showcase the versatility of mushrooms, transforming them into a flavorful and satisfying filling that can be enjoyed in various ways. Both the panini and the sub sandwich are easy to prepare and perfect for a hearty lunch or dinner.

Full Recipe:

Ingredients for Mushroom Filling:

• 500g / 6 cups (firmly packed) cremini mushrooms (finely chopped, using a food processor if desired)
• 1 tbsp garlic (roughly chopped)
• 1 cup / 140g onion (finely chopped)
• 2 to 3 tbsp olive oil
• Salt to taste (1/2 teaspoon pink Himalayan salt used)
• 1 teaspoon thyme
• 1 teaspoon paprika
• 1/4 teaspoon cayenne pepper (optional)
• 1 tablespoon balsamic vinegar
• Ground black pepper to taste (1/4 teaspoon used)

Preparing Mushroom Filling:

1. Caramelize Onions:
   • Heat a pan and add olive oil and onions.
   • Fry on medium-high heat until the onions start to caramelize, stirring frequently.
2. Add Garlic:
   • Reduce the heat to medium-low.
   • Add the chopped garlic and fry for about a minute, stirring frequently to avoid burning.
3. Cook Mushrooms:
   • Add the finely chopped mushrooms, salt, thyme, paprika, and cayenne pepper.
   • Mix well. The mushrooms will release a lot of water.
   • Fry on medium heat until all the water evaporates and the mushrooms start to brown.
4. Add Balsamic Vinegar:
   • Once the mushrooms start to brown, fry for a couple more minutes.
   • Add the balsamic vinegar and mix well.
   • Fry on medium-high heat for 2-3 minutes, stirring frequently until the mushrooms are nicely fried.
   • Turn off the heat and sprinkle with freshly ground black pepper.
   • Mix well and transfer the mushrooms to a bowl to cool down.

   Note: The mushroom filling can be made ahead of time and stored in the fridge for 2 to 3 days. Reheat slightly in the microwave before using it to make sandwiches or wraps.

Ingredients for Preparing Panini:

• Whole wheat bread (whole grain, smooth type)
• Vegan mayonnaise (non-vegans can use regular mayonnaise)
• Vegan cheddar cheese (non-vegans can use regular cheese)
• Mushroom filling

Preparing Panini:

1. Assemble the Panini:
   • Spread vegan mayonnaise on slices of whole wheat bread.
   • Add a layer of vegan cheddar cheese.
   • Add the mushroom filling.
2. Cook the Panini:
   • Grill the panini in a panini press or on a grill pan until the bread is crispy and the cheese is melted.

Ingredients for Mushroom Sub Sandwich:

• Whole wheat bread (whole grain, artisan)
• Vegan mayonnaise
• Lettuce
• Mushroom filling
• Pickled veggies:
  • 1 cup / 100g green bell pepper
  • 1 cup / 80g red onion
  • 1 tablespoon white vinegar (white wine vinegar used)

Preparing Mushroom Sub Sandwich:

1. Assemble the Sub Sandwich:
   • Spread vegan mayonnaise on artisan whole wheat bread.
   • Add a layer of lettuce.
   • Add the mushroom filling.
   • Add pickled veggies (green bell pepper and red onion pickled with white vinegar).
2. Serve:
   • Serve the panini or sub sandwich hot.

Mushroom Filling:

The mushroom filling is the star of these sandwiches, featuring finely chopped cremini mushrooms cooked with caramelized onions, garlic, and a blend of spices. The addition of balsamic vinegar adds a touch of acidity that enhances the overall depth of flavor. This filling is not only delicious but also versatile, making it an excellent option for various sandwich styles.

Preparing the Mushroom Filling:

1. Caramelize Onions: Start by heating olive oil in a pan and adding finely chopped onions. Cook over medium-high heat until the onions become golden and caramelized, stirring frequently to ensure even cooking.
2. Add Garlic: Once the onions are caramelized, reduce the heat to medium-low and add the chopped garlic. Fry for about a minute, stirring often to prevent burning.
3. Cook Mushrooms: Add the finely chopped mushrooms along with salt, thyme, paprika, and optional cayenne pepper. Mix well. The mushrooms will release moisture; cook until the water evaporates and the mushrooms begin to brown.
4. Add Balsamic Vinegar: Once the mushrooms are browned, stir in balsamic vinegar and cook for an additional 2-3 minutes. Finish by adding freshly ground black pepper, then transfer the mixture to a bowl to cool.

   Note: The mushroom filling can be prepared in advance and stored in the refrigerator for up to 3 days. Reheat slightly before using.

Preparing the Panini:

1. Assemble the Panini: Spread vegan mayonnaise on slices of whole wheat bread. Layer with vegan cheddar cheese and the prepared mushroom filling.
2. Cook the Panini: Grill the assembled panini in a panini press or on a grill pan until the bread is crispy and the cheese is melted.

Preparing the Mushroom Sub Sandwich:

1. Assemble the Sub Sandwich: Spread vegan mayonnaise on artisan whole wheat bread. Layer with lettuce, the mushroom filling, and pickled veggies (green bell pepper and red onion pickled in white vinegar).
2. Serve: Enjoy the sub sandwich as a fresh and hearty meal.

Possible Questions:

1. Can I use different types of mushrooms for the filling? Yes, you can use various mushrooms like shiitake or button mushrooms. Each type will bring its unique flavor and texture to the filling.
2. How can I make this recipe gluten-free? To make this recipe gluten-free, use gluten-free bread and ensure that the vegan mayonnaise is also gluten-free.
3. Can I prepare the mushroom filling in advance? Absolutely! The mushroom filling can be made ahead of time and stored in the refrigerator for up to 3 days. Reheat before using it in sandwiches.
4. What can I use as a substitute for balsamic vinegar? If you don’t have balsamic vinegar, you can use red wine vinegar or apple cider vinegar as a substitute.
5. Can I make this recipe without cheese? Yes, you can omit the cheese for a dairy-free version or use a dairy-free cheese alternative.

Conclusion:

The Mushroom Panini and Mushroom Sub Sandwich offer a delectable combination of flavors and textures, perfect for any meal. The caramelized onions and savory mushroom filling create a satisfying and robust flavor profile, while the crispiness of the panini or the freshness of the sub sandwich adds a delightful contrast. Both variations are easy to prepare, making them ideal for a quick lunch or a more substantial dinner. Whether you’re a mushroom lover or just looking for a tasty new sandwich idea, these recipes are sure to become a favorite in your culinary repertoire. Enjoy these sandwiches hot and fresh for the best taste experience!