Slow Cooker Salisbury Steak Meatballs

Ingredients

• 2 lbs ground beef
• 1/2 cup breadcrumbs
• 1/4 cup milk
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1 egg
• 2 tbsp Worcestershire sauce
• 1 tsp salt
• 1/2 tsp black pepper
• 1 tsp dried parsley
• 1/2 tsp smoked paprika
• 2 tbsp olive oil
• 2 cups beef broth
• 2 tbsp cornstarch
• 3 tbsp water
• 1/2 cup sliced mushrooms
• 1 small green bell pepper, chopped
• 1 tbsp tomato paste