Directions

1. In a large pot of boiling salted water, cook pasta according to package instructions; drain well.
2. Heat olive oil in a saucepan over medium heat. Add garlic and onion, and cook, stirring frequently, until onions have become translucent, about 2-3 minutes.
3. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in milk, and cook, whisking constantly, until slightly thickened, about 3-4 minutes.
4. Add spinach and cook until wilted, about 2-3 minutes. Stir in Parmesan until melted, about 1 minute. Add orzo and gently toss to combine; season with salt and pepper, to taste.
5. Serve immediately.