Easy Sausage, Peppers, and Onions | Italian | Umami

Ingredients

• 4 Italian sausage links (sweet, hot, or a couple of each)
• 2 tablespoons extra virgin olive oil
• 1 green bell pepper, sliced into 2 to 3 inch-long strips
• 1 red bell pepper, sliced into 2 to 3 inch-long strips
• 1 bell pepper of another color (yellow or orange or purple), sliced into strips 2-3 inches long
• 4 garlic cloves, sliced into slivers
• 1 large sweet or yellow onion, sliced into 1/4-inch half-moons
• 1 small (15-ounce) can crushed tomatoes
• 1 tablespoon dried oregano
• 1/2 cup Marsala or red wine (optional)
• 1/2 teaspoon red pepper flakes (optional)
• Salt to taste