Grilled Portobello and Arugula Burgers

Ingredients

• 1/2 cup fat-free mayonnaise
• 2 teaspoons Dijon mustard
• 6 teaspoons minced fresh rosemary
• 1 garlic clove, minced
• nonstick vegetable oil cooking spray
• 4 large portabella mushrooms, stems trimmed
• 2 tablespoons olive oil
• arugula
• whole grain buns

Directions

1. 1

   Mix mayonnaise, mustard, 2 teaspoons rosemary and garlic in small bowl.

2. 2

   Spray grill rack with nonstick spray, then prepare barbecue (medium heat). Brush mushrooms all over with olive oil. Sprinkle each with 1 teaspoon rosemary, then salt and pepper. Grill until tender, about 10 minutes per side.

3. 3

   Spread mayonnaise mixture over buns. Place mushrooms and arugula on bun bottoms. Cover with bun tops.