Prepare the ingredients by chopping the vegetables and slicing the sausage.
Heat olive oil in a large skillet over medium heat.
Add the sausage to the skillet and cook until browned, about 5-7 minutes.
Remove the sausage from the pan and set aside, leaving the drippings.
Add diced onions and sauté until translucent, about 3-4 minutes.
Include minced garlic, stirring it in for about 30 seconds until fragrant.
Add bell peppers and broccoli, stirring to combine and sauté for 5-6 minutes until tender.
Return the sausage to the pan, add salt, pepper, and Italian seasoning. Stir to combine.
Cook everything together for an additional 2-3 minutes, allowing flavors to meld.
Serve hot and enjoy your delicious sausage and veggie skillet.