Melt 3 tablespoons of the ghee in a medium stock pot. Add the onions and cook over medium-high heat for 8-10 minutes until golden brown.
Add the garlic, tomatoes, tomato paste and 1 tablespoon of the berbere and cook for 5-7 minutes. Reduce the heat if needed to prevent burning.
Add the lentils, broth and salt, bring it to a boil, reduce the heat to low and cover and simmer the lentils, stirring occasionally, for 40 minutes (adding more broth if needed) or until the lentils are soft.
Stir in the remaining tablespoon of ghee and berbere. Simmer for a couple more minutes. Add salt to taste.
Reheating Instructions
Heat in the microwave on medium-high heat until heated through or in a pot over medium heat on the stove top.