Portobello Patty Melt
Some of the best moments in the kitchen happen before you even take the first bite. For me, it's that satisfying moment when I slice a sandwich in half and the beautiful layers are revealed—each one adding its own color, flavor, and texture. It's a simple reminder that the most memorable meals don't have to be complicated.
This sandwich is one of those recipes. Earthy mushrooms, sweet caramelized onions, peppery arugula, and a bright swipe of yellow mustard come together between two slices of bread to create something that's comforting, wholesome, and surprisingly satisfying. Every layer has a purpose, and together they create a meal that nourishes both your body and your soul.
It's the perfect recipe for a relaxing "Sandwich Saturday," when slowing down and making something from scratch feels just right. Even better, it comes together in only 45 minutes, making it easy to skip the takeout menu and replace the familiar "What's for dinner?" question with something everyone will look forward to.
The real surprise, however, isn't just how delicious this sandwich is—it's what's hidden inside. Several of its star ingredients are among nature's most powerful foods for supporting long-term health.
A Little Food for Thought
Mushrooms, onions, and arugula are part of what Dr. Joel Fuhrman calls G-BOMBS—an easy-to-remember acronym for Greens, Beans, Onions, Mushrooms, Berries, and Seeds. These foods are packed with vitamins, minerals, antioxidants, and phytochemicals that help strengthen the immune system and are supported by a growing body of research for their role in promoting health and reducing cancer risk. Making these nutrient-rich foods a regular part of your meals is one of the simplest ways to nourish your body while enjoying every bite.
Sometimes the healthiest meals are also the most beautiful. Slice into this sandwich, admire the colorful layers, and remember that every delicious bite is another step toward feeding yourself—and the people you love—with care.
Ingredients
1/2 tsp. smoked paprika
1/4 tsp. ground pepper
1/4 cup olive oil, divided
1/2 tsp. sea salt
8 portobello mushroom caps
1 yellow onion, thinly sliced
4 Tbsp. Earth Balance (non-dairy butter)
8 sourdough bread slices
1/4 cup Dijon mustard, divided
8 oz. vegan smoked gouda cheese
2 cups packed baby arugula
small dill pickles, for serving
Preheat oven to 450 degrees. Stir together paprika, pepper, 3 tablespoons oil, and salt in a small bowl. Rub mushrooms with mixture and arrange, gill sides down, on a baking sheet. Bake until tender and lightly browned, about 20 minutes.
Meanwhile, heat remaining 1 tablespoon of oil in a large skillet over medium heat. Add thinly sliced onions, and cook, stirring often, until softened and lightly browned, 8 - 10 minutes. Transfer softened onions to a bowl, reserving the skillet.
Spread 1/2 tablespoon Earth Balance on one side of each slice of bread. Divide one tablespoon of mustard among the unbuttered side of four slices of bread. Top each with a slice of cheese. Layer with arugula, onions, mushrooms, and another slice of cheese. Top with remaining four slices of bread, buttered side up.
Cook two sandwiches in reserved skillet over medium heat, flipping once, until cheese is melted and bread is golden brown, about 4 minutes per side. Repeat with remaining sandwiches. Serve with mini pickles (gherkins).