Whisk together first 2 ingredients until smooth.

Sprinkle beef with flour,salt, and pepper;toss to coat.

Cook beef,in batches,in hot oil in a large skillet over medium-high heat,stirring occasionally, 10-12 minutes or until browned. Place in a 6-qt. slow cooker. Add sweet potatoes,next 8 ingredients,and broth mixture. Cover and cook on High 6 to 7 hours or until tender.