These slow cooker 4-ingredient beef and poblano foil packets are the kind of hands-off dinner that makes a busy summer weekend feel easy. The foil keeps everything tucked together so the beef turns extra tender as it cooks low and slow, while the poblanos add a gentle heat and rich pepper flavor. It reminds me of the sort of simple, practical meal that shows up at family get-togethers when nobody wants to stand over a hot stove but everyone still wants something hearty.

Serve these foil packets with warm tortillas, rice, or roasted potatoes to soak up the savory juices. I also like setting out lime wedges, sliced avocado, sour cream, and a crisp slaw or simple tomato salad so everyone can build their plate the way they like it. If you are feeding a crowd, a pot of beans on the side makes this stretch beautifully.

Slow Cooker 4-Ingredient Beef and Poblano Foil Packets

Servings: 4

Slow cooker beef and poblano foil packets in a black slow cooker
Slow cooker beef and poblano foil packets in a black slow cooker

Ingredients

2 pounds beef chuck roast, cut into 8 equal pieces

2 poblano peppers, sliced into strips
1 packet onion soup mix, about 1 ounce
2 tablespoons butter, cut into small pieces

Main ingredients for beef and poblano foil packets
Main ingredients for beef and poblano foil packets

Directions

1. Tear 4 large sheets of heavy-duty foil. Divide the beef evenly among the sheets, then top each portion with sliced poblano peppers, a sprinkle of onion soup mix, and a few pieces of butter.

Beef, poblano, soup mix, and butter portioned on foil sheets
Beef, poblano, soup mix, and butter portioned on foil sheets

2. Fold the foil tightly around each portion to make sealed packets, then stack the packets inside a black slow cooker.

Foil packets stacked in a black slow cooker
Foil packets stacked in a black slow cooker

3. Cover and cook on low for 7 to 8 hours, or until the beef is very tender and easy to shred with a fork.

Cooked foil packet opened to reveal tender beef and poblanos
Cooked foil packet opened to reveal tender beef and poblanos

4. Carefully open the packets, spoon some of the juices over the beef, and serve hot right from the foil or transfer to plates.

Plated beef and poblano foil packet dinner with sides
Plated beef and poblano foil packet dinner with sides

Variations & Tips

Add More Heat: If your family likes a spicier dinner, add a sliced jalapeno to each packet or a pinch of crushed red pepper before sealing the foil. Poblanos are usually mild, so this is an easy way to wake things up.

Make It Stretch: This beef is great tucked into tortillas, spooned over rice, or piled onto sandwich rolls. When I am trying to get one more meal out of it, I shred the beef and serve it taco-style with plenty of toppings.

Use the Right Foil: Heavy-duty foil works best here because the packets cook for hours and need to hold in all the juices. If your foil feels thin, double-wrap each packet to help prevent leaks.

Prep Ahead: You can assemble the foil packets the night before and keep them in the fridge on a tray. In the morning, just place them in the slow cooker and turn it on, which is a lifesaver on busy workdays.