Feta Mushroom Burgers PT25M https://img1.recipesrun.com/201907/2019/1107/26/6/903144/300x200x90.jpg Hamburgers are popular food, not only because they are easy to make, but also because they are delicious. The burgers are so quick to whip up on the grill on busy nights. 6 servings Ingredients: 10 fresh basil leaves, thinly sliced 6 whole wheat hamburger buns or sourdough rolls, split 6 tbsp. crumbled feta or blue cheese 1 large onion, cut into 1/2-inch slices 6 large portobello mushrooms, stems removed 1 tbsp. olive oil 2 tbsp. balsamic vinegar 1/2 tsp. garlic powder 2 tsp. Worcestershire sauce 3 Italian turkey sausage links (4 ounces each), casings removed 1 pound lean ground beef (90% lean)