Portobello Mushroom Burger

Serves 1

COST: $3.03

Per 1⁄2 English muffin

Calories: 332

Fat: 17g

Carbohydrates: 34g

Protein: 10g

Fiber: 4g

Sugar: 4g

Sodium: 303mg

1 English muffin, cut in half

2 teaspoons butter

1 large portobello mushroom

1 romaine lettuce leaf

1 teaspoon olive oil

3 tablespoons (or to taste) chopped onion

1 tomato slice

2 tablespoons grated Swiss cheese

Toast the English muffin halves. Spread 1 teaspoon butter on both halves while still warm, and set aside. Wipe the portobello mushroom with a damp cloth and cut into thin slices. Wash the lettuce leaf, dry, and tear into pieces.
Heat the olive oil on medium in a skillet. Add the chopped onion and cook on medium-low heat until tender.
Add the remaining 1 teaspoon butter to the frying pan. Push the onion to the side and lay the portobello mushroom slices flat in the pan. Cook until browned on the bottom, about 2 minutes. Turn over and cook the other side until browned. Add the tomato slice to the pan while the mushroom is cooking for the last 2 minutes.
When the mushroom slices are browned on both sides, sprinkle the grated cheese on top. Cook briefly until the cheese is melted.
To make the burger, lay the tomato on 1 muffin half and place the cooked onion on the other half. Lay the mushroom and melted cheese mixture on top of both halves. Serve open-faced, garnished with the lettuce.