BBQ Flank Steak (Slow Cooker)

2 medium sweet potatoes, peeled and shredded
1 pound flank steak, well trimmed
1 small onion, finely chopped
1 (8 oz.) can crushed pineapple in juice
1/2 cup reduced-sodium chicken broth
1 tsp. ground dry ginger
1/4 cup reduced-sodium BBQ sauce
1 Tbsp. honey
2 tsp. Dijon mustard
Salt and pepper to taste

Place sweet potatoes in bottom of slow cooker. Lay flank steak on top of potatoes. Combine remaining ingredients in a large bowl. Pour over the steak. Cover and cook on high until the steak is tender enough to shred, using two large forks, about 6-7 hours. Makes 4 servings, about 1 cup each.