Butter Chicken

Name: Butter Chicken
Ingredients: 2 pounds boneless chicken breasts (skinless, cut into 1-inch pieces); 2 tablespoons lemon juice; 2 tablespoon olive oil (divided); 3 teaspoons curry powder (divided); 1 medium onion (thinly sliced); 3 cloves garlic (minced); 1 tablespoon fresh ginger (finely chopped); 3 tablespoon butter (divided); 1 pinch white pepper; 1/2 teaspoon salt; 2 cups tomato puree; 1/2 cup heavy cream (or evaporated milk); 3 cups of cooked basmati rice