01 -
In a large skillet over medium heat, melt butter. Add finely chopped onion, season with salt and pepper. Cook, stirring occasionally, until softened, approximately 7 minutes.
02 -
Add chopped broccoli and sauté, stirring, until florets are crisp-tender and bright green, 3 to 5 minutes. Stir in garlic and cook until fragrant, about 1 minute.
03 -
Add orzo to the pan and stir constantly until lightly toasted and beginning to turn golden, approximately 1 minute.
04 -
Pour in broth; season with additional salt. Increase heat to high and bring to a boil, scraping any browned bits from the pan. Reduce to medium-low, simmering and stirring frequently, until most liquid is absorbed, about 7 minutes.
05 -
Stir in milk, return to a simmer, and continue stirring until the mixture is creamy and the orzo is tender, about 1 minute more.
06 -
Remove skillet from heat and gently stir in shredded cheddar. Let stand for 5 minutes until cheese melts and sauce thickens. Stir to combine before serving, and garnish with sliced chives.