To your slow cooker add the stew beef, onion, carrots, potatoes and celery.
To a mixing bowl whisk together the beef broth, tomato paste, Dr. Pepper, brown gravy mixes and beefy onion soup mix.
Pour the liquid mixture into the slow cooker and stir to combine.
Cover and cook on low 6 hours or high 4 hours until the vegetables are soft and meat is tender.
Serve!
Notes
Tips & Tricks:
Brown the beef (optional): For even deeper flavor, you can sear the stew meat in a skillet before adding it to the slow cooker. It’s not required, but it does give it that rich, beefy depth.
Don’t over-stir: Stir just enough to combine, then leave it alone. Over-stirring during cooking can cause the potatoes to break down too much.
Use a liner: For easier cleanup, use a slow cooker liner, especially with thick stews like this one.
Thicken it, if needed: If you prefer a thicker stew, remove the lid during the last 30–45 minutes of cooking or mash a few potatoes into the broth at the end.
Cut veggies evenly: Try to keep the potato and carrot pieces similar in size so they cook at the same rate.
Substitutions:
Stew beef → Use chuck roast cut into chunks, or even sliced sirloin for a slightly leaner option.
Pepper → You can substitute with Coca-Cola, root beer, or even a splash of balsamic vinegar + brown sugar if you want to skip soda entirely.
Beef broth → Use vegetable broth or water with a bouillon cube in a pinch.
Brown gravy mix → Substitute with homemade gravy mix or a packet of au jus mix if needed.
Beefy onion soup mix → A regular onion soup mix will work just fine.
Variations:
Make it spicy: Add a pinch of crushed red pepper flakes or a few dashes of hot sauce for a mild kick.
Add green beans or peas: Toss in frozen peas or green beans during the last hour of cooking for a little extra color and texture.
Turn it into a pie: Scoop leftovers into a baking dish, top with puff pastry or mashed potatoes, and bake for an easy beef pot pie.
Use sweet potatoes: Swap out the russets for sweet potatoes if you like a hint of sweetness and extra nutrients.
Serve over mashed potatoes or egg noodles: Instead of as a stand-alone stew, spoon it over something starchy to make it stretch even further.