Kale Pasta

Ingredients (12)

• 1/2 cup walnut halves
• 8 ounces whole wheat spaghetti
• 1 1/2 tablespoons extra virgin olive oil
• 2 large red onions
• 2-3 large bunches kale
• 4 cloves garlic
• 1 can diced tomatoes in their juices
• 2/3 cup dry white wine
• 1/2 teaspoon crushed red pepper flakes
• 1/4 teaspoon kosher salt
• 1/8 teaspoon black pepper
• 1/2 cup freshly grated Parmesan cheese