Name: Slow Cooker Salisbury Steak and Mashed Potatoes
Prep time: 20 min
Cook time: 240 min
Total time: 260 min
Yield: 4 Servings
Ingredients: 1 pound ground beef (85/15); 1/3 cup breadcrumbs (panko or regular); 1 tablespoon ketchup; 1 teaspoon yellow mustard; 1 tablespoon beef base ((or 2 beef bouillon cubes, or skip)); 1/2 teaspoon Kosher salt (divided); 1/4 teaspoon crushed black pepper (divided); 2 tablespoons butter; 1 yellow onion (sliced); 8 ounces crimini mushrooms (sliced); 2 cups beef broth; 1 tablespoon cornstarch; 2 teaspoons Worcestershire sauce; parsley (for garnish (optional)); 6 russet potatoes (scrubbed clean); 4 tablespoons of butter; 1/2 cup sour cream; 1 cup whole milk or heavy cream; 1/2 teaspoon Kosher salt; 1/4 teaspoon ground black pepper