slow cooker bbq sloppy joe

Ingredients

• 1 1/2 pounds lean ground beef
• 1 cup red onions, chopped
• 1 cup poblano peppers, seeded and chopped
• 3 large cloves garlic, pressed
• 1/2 teaspoon garlic salt
• freshly ground black pepper, to taste (i always use mixed peppercorns)
• 1 cup ketchup
• 3/4 cup your favorite bbq sauce
• 1/4 cup low-sodium beef broth
• 2 tablespoons worcestershire sauce
• 2 tablespoons chili sauce
• 2 tablespoons prepared yellow mustard, or more to taste
• 2 tablespoons brown sugar, such as demerara
• 1 tablespoon cider vinegar
• 1 tablespoon chili powder
• 4 large toasted hamburger buns
• 4 slices cheese