To a large pan on the stove over medium high heat add in the butter once melted add in the onion, broccoli, garlic, orzo, chicken broth, and seasonings stir well. Bring up to a simmer, turn the heat to low, let simmer covered for eight minutes, stirring occasionally.
While the orzo is simmering to a smaller pan on the stove over medium heat add in the 3 tablespoons of butter over medium heat once the butter has melted down add in the panko and stir well. Let cook until golden brown. Stir in the Parmesan cheese and set to the side.
Once the orzo is tender stir in the panko mixture and serve.