In a medium skillet over medium heat, cook the jalapenos, white parts of the green onion and garlic cloves for 2-3 minutes or until tender and fragrant. Set aside.
Use non-stick spray to coat the inside of a 2-3 quart slow cooker.
Place the cream cheese, cheddar cheese, monterey Jack Cheese, sour cream, ½ cup bacon, salt, pepper and the jalapeno mixture in the slow cooker.
Cover and cook on low for 2 hours, stirring every 30 minutes. Be sure to scrape the bottom of the slow cooker as you stir. After 2 hours, everything should be melted, smooth and ready to serve.
Top with the green parts of the green onions, remaining bacon crumble and extra shredded cheese if desired then serve with your favorite dippers.