• Heat a  skillet on medium heat and add a drizzle of olive oil to the pan.
• Sear the Italian sausages 2-3 mins on each side until starting to brown. You aren't trying to cook them all the way through, you're just browning the outside a bit which always increases the flavor while slow cooking. Transfer them to the bottom of a slow cooker.
• Add the sliced onions and peppers on top of the sausages. Sprinkle with the garlic salt, black pepper, and Italian seasoning.
• Spread the marinara sauce over the onion and pepper mixture.
• Cook the sausage and peppers on high for 3-4 hours or low for 6-7 hours until the peppers are soft and the Italian sausage is cooked through.

Adding Cheese (Optional)

• Sprinkle ½ - ¾ cups of your favorite shredded white cheese, like mozzarella, Monterey Jack, an Italian blend, or Colby Jack would all be great choices.
• Broil the Italian sausage and peppers mix for 1-2 minutes 4" from the heat source until the cheese is melted.

Serve on a Bun with Cheese (Optional)

• toast the bun and add a little butter to each
• add the sausage and peppers mix and sprinkle with shredded cheese
• broil the sausage and peppers in the bun until the cheese is melted, keeping an eye on things so the buns don't burn.