Slow Cooker Beef Swiss: 5 Comforting Tips for Success

Tender and flavorful beef swiss steak cooked in a slow cooker with a rich savory sauce.

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Trim excess fat and silverskin from the round steak. Cut the steak into 4-6 serving-sized portions. In a shallow dish, combine flour with salt and pepper. Dredge each steak piece in the flour mixture, shaking off excess.
Heat olive oil in a large skillet over medium-high heat. Sear steak in batches for 2-3 minutes per side until golden brown. Remove steak and set aside.
In the same skillet, reduce heat to medium. Add sliced onion and cook until softened (3-4 minutes). Add sliced garlic and cook for 1 minute until fragrant. Pour in white grape juice and scrape up browned bits from the bottom of the skillet. Simmer and reduce for 2 minutes.
Stir in tomato paste and cook for 1 minute. Add beef broth, diced tomatoes with juices, Worcestershire sauce, and dried thyme. Stir to combine and season with salt and pepper to taste.
Pour half the sauce mixture into the bottom of your slow cooker. Arrange seared steak pieces in a single layer. Scatter carrots and celery over the steak. Pour remaining sauce over everything.
Cover and cook on low for 6-8 hours or on high for 3-4 hours, until steak is fork-tender. If a thicker sauce is desired, whisk together 1-2 tablespoons cornstarch with an equal amount of cold water or beef broth and stir into the crockpot during the last 30 minutes of cooking.