Heat ½ tablespoon of olive oil in a large skillet pan over medium high heat. One hot, add sausages and cook, turning until browned cooked/heated through.
Remove sausages and set aside.
Turn skillet heat to medium. Add the remaining oil to the skillet.
Add onion and cook for 3 minutes. Add the garlic and cook and additional 1-2 minutes or until onions turn golden brown.
Add flour and toss with the onions and garlic until absorbed.
Add 3/4 cup of beef broth and mix until a thick mixture develops. Pour the remaining beef broth in the skillet and mix until combined.
Bring to a simmer and stir frequently until the gravy thickens. Toss the sausages back into the pan and coat with the gravy. Note: the gravy will thicken as it stands. Season with salt and pepper to taste.