Heat oil in large skillet or wok over high heat.
Add onion; cook and stir 5 minutes or until onion is softened and lightly browned.
Add tofu and curry paste. Stir 2 minutes or until curry is fragrant and tofu is coated.
Add coconut milk; bring to a boil.
Reduce heat to low.
Add broccoli and green beans.
Cook 20 minutes or until vegetables are tender and sauce is thickened, stirring frrequently.
Season with salt.
Serve over rice or noodles.