Add aromatics: Stir in the diced onion and minced garlic, cooking until fragrant and softened, about 2 minutes.
Incorporate the orzo: Next, add the orzo to the pot, followed by the chicken broth and milk. Bring everything to a gentle simmer.
Simmering away: Cover the pot and let it cook for 8 to 10 minutes, stirring occasionally.
Introduce the broccoli and cheese: Uncover the pot and add the fresh broccoli florets and grated Parmesan cheese. Stir until the cheese melts and the broccoli becomes tender, about 3 to 4 minutes.
Season and serve: Finally, season with salt and black pepper. Stir well to combine and serve immediately.
Notes
For extra creaminess, increase the milk or substitute half-and-half. This dish pairs well with a side salad or crusty bread.