Recipe: Spicy Tomato Lentil Soup

-1 tablespoon butter

-½ yellow onion, diced

-1 clove garlic, minced

-½ teaspoon crushed red pepper flakes

-4 cups tomato soup (homemade or boxed)

-1 ½ cups cooked lentils (I used the steamed cooked lentils from Trader Joes)

-1 ½ cups cooked white rice (I used Jasmine rice)

-1 ½ tablespoons curry powder

-Kosher salt