Creamy Makhana and Peas Soup

Name: Creamy Makhana and Peas Soup
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Yield: 2
Ingredients: 1 tbsp butter; 2 cups onions; 1/2 cup peas; Water as required; 1 cup fox nut powder; 2 cups milk; 1/2 tsp black pepper powder; Salt - as per taste