Spicy Sprouts Sandwich

8 slices whole wheat bread
½ cup onions, sliced
4 teaspoons low fat butter to cook

For the sprouts

1 cup mixed sprouts, boiled
½ cup potatoes, boiled and mashed
½ cup onions, finely chopped
2 teaspoons ginger-garlic paste
1 green chilli, finely chopped
2 teaspoons pav bhaji masala
2 teaspoons coriander-cumin seed (dhania-jeera) powder
¼ teaspoon turmeric powder (haldi)
½ teaspoon black salt (sanchal)
1½ cups tomatoes, finely chopped
2 teaspoons oil
salt to taste

Heat the oil in a non-stick pan, add the onions and sauté till the onions turn translucent.Add the ginger-garlic paste, green chilli and sauté for another 1 minute.
Add the pav bhaji masala, coriander-cumin seed powder, turmeric powder, black salt, tomatoes and salt and cook for 5 minutes.Add the sprouts and potatoes and mix well. Keep aside.

Divide the sprouts mixture into 4 equal portions.Place one portion on one slice of bread. Top with an onion slice and sandwich using another slice of bread.Repeat with the remaining ingredients to make 3 more sandwiches.Pre-heat the griller and grill the sandwiches, using a little low fat butter to cook.
Serve hot.