Best Slow Cooker Sweet Potato Roast Beef Dinner

Ingredients (14)

• 2-3 pound beef chuck roast
• Salt & pepper
• 2 Tbsp. olive oil
• 2 large red onion
• 1 fennel
• 2 shallots
• 2-3 celery stalks
• 1 cup of beef stock
• 1 cup red wine
• 2 Tbsp. red wine vinegar
• 2 Tbsp. Worchestersire sauce
• 2 tsp. thyme
• Parsley or rosemary for garnish
• 2-3 small sweet potatoes