Easter Peppers and Sausage Meal

Ingredients 🛒: 1 lb (450g) Italian sausage links (mild or spicy) 1 tbsp olive oil 1 onion, sliced 3 bell peppers (red, yellow, orange), sliced 3 cloves garlic, minced 1 can (14 oz) crushed tomatoes 1 tsp dried oregano 1 tsp dried basil ½ tsp red pepper flakes (optional) Salt & peppe