Rustic Italian Sausage with Peppers and Onions over Garlic Mashed Potatoes

Ingredients:
1 lb Italian sausage
2 bell peppers, sliced
1 large onion, sliced
3 cloves garlic, minced
2 tbsp olive oil
1 tsp dried basil
1 tsp dried oregano
Salt and pepper to taste
4 large potatoes, peeled and cubed
1/2 cup milk
2 tbsp butter
1/4 cup grated Parmesan cheese
Directions: