In a skillet, melt 3 T. of the butter and the olive oil over medium-low heat.
Add the garlic and cook 1 minute-be careful not to burn the garlic.
Add the shrimp, salt and the pepper and saute until the shrimp have just turned pink, about 5 minutes. Stir frequently.
Add lemon juice, zest and cook 1 minute.
Remove the shrimp to a plate.
Add the Tablespoon of butter you have left and the broccoli.
Cover and steam a few minutes.
Return the shrimp and the sausage to the pan.
Garnish with parsley if desired.