Zucchini and Radicchio Couscous

Ingredients

• 3 tablespoons olive oil
• 1 yellow onion (diced)
• 2 cloves garlic (minced)
• 4 cups dry pearl couscous
• Kosher salt (to taste)
• Freshly ground black pepper (to taste)
• 2 cups dry white wine
• 2 cups vegetable broth
• 1½ cups diced zucchini
• 1½ cups chopped radicchio
• 1 cup heavy cream
• 1 cup grated ricotta salata (plus more for garnish)
• 3 tablespoons unsalted butter
• ¼ cup torn fresh mint