Step 1

Cook orzo in very salty water until al dente. Drain and set aside.

Step 2

Heat olive oil in a medium-sized pot over medium heat.

Step 3

Add green onion and garlic to oil. Sauté, stirring once or twice, for about a minute until onions have softened and garlic is fragrant.

Step 4

Add salt and pepper. Stir to combine.

Step 5

Add flour to pot and stir to combine. Let cook for 30 seconds or so to cook out any raw flour taste.

Step 6

Add milk to the pot a little at a time, whisking constantly to work out any lumps. Cook, stirring occasionally, until sauce has thickened and reached a low simmer, about 5-8 minutes.

Step 7

Add chopped spinach to sauce and stir to combine.

Step 8

Add parmesan cheese. Stir until cheese has melted and you have a smooth sauce.

Step 9

Return cooked orzo to sauce and toss to coat. Turn off the heat and serve immediately.