1.Heat oil in tagine or large frying pan;cook onion, stirring, until softened. Add garlic, ginger and paste; cook, stirring, about 1 minute or until fragrant.
2.Add undrained tomatoes, capsicum, the water, beans and lentils; bring to the boil. Reduce heat; simmer, uncovered, about 15 minutes or until tagine thickens. Remove from heat; stir in mint, season.