A one-dish wonder.
Comfort food was never so simple.
Heat olive oil in a large skillet over medium heat. Add onion and cook, stirring frequently, until onion is soft and slightly transparent - about 4-5 minutes.
Remove sausage from casing and add to the onions, breaking up with a wooden spoon as the sausage cooks. Stir frequently until sausage is cooked through.
Add garlic to pan and stir through. Cook one minute.
Add beans to pan and gently stir to combine. Cook, stirring occasionally, until the edges of beans brown slightly.
Remove from heat and serve immediately. Top with a sprinkle of mozzarella if desired.