Make-Ahead Slow Cooker Beef Stew

Combine flour, 1 teaspoon smoked paprika, seasoned salt, and 1/2 teaspoon black pepper in a large, resealable plastic bag. Add beef, squeeze out excess air, and seal the bag. Shake bag until beef thoroughly coated with seasoned flour.

Heat olive oil in a large skillet over medium-high heat. Remove beef from seasoned flour and shake off excess. Add beef, onion, and mushrooms to the skillet; cook and stir until beef is evenly browned and no longer pink. Drain and discard any excess grease.

Transfer beef mixture to a slow cooker. Stir in carrots, potatoes, beef broth, celery, tomatoes, Marsala wine, onion soup mix, garlic, Worcestershire sauce, and remaining 1 teaspoon smoked paprika. Cover slow cooker.

Cook on High for 4 to 6 hours or on Low for 10 to 12 hours. Season with salt and black pepper.

Combine cornstarch and water in a small bowl; gradually stir into stew until thickened.