Best Portobello Mushroom Steaks with Balsamic Marinade - Yummy Gusto

Ingredients

• 4 large portobello mushrooms, stems removed and caps wiped clean
• 2 tablespoons balsamic vinegar
• 2.5 tablespoons extra virgin olive oil
• 2 tablespoons low sodium soy sauce
• 3 garlic cloves, minced
• 1 teaspoon onion powder
• 1 teaspoon paprika
• 0.33 teaspoon ground cumin
• 0.33 teaspoon smoked paprika
• Freshly ground black pepper, to taste
• Cayenne pepper, optional, to taste