MAKE FLAVOR BASE: Heat 1½ tablespoons olive oil in a large pot. Add 1 medium onion (chopped) and sauté for 3 minutes.Add 2 cloves garlic and 1 inch ginger (both grated), ¼ teaspoon red pepper flakes, 2 teaspoons curry powder, 1 teaspoon cumin, 2 teaspoons coriander, and 1 teaspoon turmeric powder. Sauté one more minute. Add 2 tablespoons water if pot gets dry.
ADD LENTILS: Add 2 cups vegetable stock, 1 can (15 ounces) crushed tomatoes, 1 can (14 ounces) coconut milk, 1 cup split red lentils (rinsed with water), then season with 1 teaspoon salt and ⅛ teaspoon black pepper.
SIMMER: Bring to a boil then lower the heat and simmer until the lentils are cooked - about 20 minutes.Stir occasionally.When cooked, stir in 1 teaspoon garam masala.Add more broth if necessary to reach your desired consistency.
SERVE: Serve with basmati or brown rice, lemon juice, cilantro and/or thinly sliced scallions, and a dollop of Greek-style yogurt.