In a large pan heat butter and oil over medium-high heat. Add onion and cook 5 minutes. Add curry powder, cinnamon, ginger and garlic, cook an additional 2-3 minutes.
Add broth and cauliflower; bring to boil then stir in quinoa. Cover, reduce heat to medium and let simmer 8-10 minutes until done.
Remove lid, fluff with fork, stir in grapes and spinach allowing the heat to wilt the leaves.
Serve with chopped fresh mint.