Oven Roasted Smoked Sausage and Potatoes

Ingredients:
1 package of smoked sausage, sliced into rounds
1 large onion, peeled and chopped
5 large potatoes, peeled and chopped into ½ inch cubes
olive oil
fine sea salt
freshly ground black pepper
sweet paprika
dried thyme
a handful of greated strong cheddar cheese