Slow Cooker Rosemary and Mushroom Pot Roast

Ingredients (9)

• 4 lb. Chuck Pot Roast
• 1 Tablespoon olive oil
• Kosher salt and pepper
• 1 cup red wine, divided
• 1 1/2 cups chicken or beef broth (check labels for GF)
• 8 ounces sliced mushrooms
• 1 onion, quartered
• 2 sprigs rosemary
• 3 cloves garlic, minced