3-Green Whole Wheat Pasta

Ingredients: 8 ounces whole wheat pasta (such as penne, fusilli, or your favorite shape) 1 tablespoon olive oil 2 cloves garlic, minced 1 small onion, finely chopped 1 cup broccoli florets 1 cup frozen peas 2 cups fresh spinach leaves 1/2 cup vegetable broth or water 1/2 cup grated Parmesan cheese Salt and freshly ground black pepper to taste