Combine first 6 ingredients, stirring well with a whisk.
Bring 1 1/2 cups water to a boil in a medium saucepan; gradually stir in couscous, currants, and curry. Remove from heat; cover and let stand 5 minutes. Fluff with a fork.
Combine couscous mixture, peas, bell pepper, pine nuts, and onions in a large bowl. Add broth mixture; toss gently to coat.