1. In a skillet over medium heat, cook the ground meat until browned. Add the onions and garlic and cook until the onions are translucent. Season with salt and pepper to taste.
2. If there is excess fat, drain the meat mixture, and then transfer it to the slow cooker.
3. In the same skillet, briefly deglaze with the 1/4 cup of beef broth or water, scraping up any flavorful bits from the bottom of the pan. Pour this liquid over the meat in the slow cooker.
4. Spread the frozen mixed vegetables over the meat evenly.
5. In a separate bowl, whisk together the packet of brown gravy mix with 1 1/2 cups of water until smooth. Pour the gravy over the vegetables in the slow cooker.
6. Prepare the instant mashed potatoes according to the package instructions.
7. Carefully spoon the mashed potatoes over the gravy layer in the slow cooker, spreading them out to form an even top layer.
8. Set your slow cooker to low and cook for 4-6 hours. If you’re short on time, you can cook on high for 2 hours instead.
9. Once done, let the Shepherd’s Pie stand for a few minutes before serving to allow the layers to set.
Enjoy this comforting Slow Cooker Shepherd’s Pie with your chosen sides for a warm, homestyle meal that’s easy to make and sure to please the whole family.