Step 1

Preheat a skillet with oil. Once the oil is hot, add the beef in a single layer and saute until browned on both sides. Don't crowd the pan and cook beef in batches if needed. Remove and set aside.

Step 2

In the same skillet, sauté the onion until lightly browned, adding more oil if needed.

Step 3

Add all the ingredients to the slow cooker. Set it on high for 4 hours or on low for 7 hours.

Step 4

Remove bay leaves, season to taste, and serve garnished with parsley if desired.