Step 1: Add the stew beef to the slow cooker - Place the stew beef directly into the bottom of your slow cooker. Spread it out a bit so it cooks evenly. This is the foundation of the whole dish, so give it a good start.
Step 2: Season the beef - Sprinkle the ranch seasoning mix, brown gravy mix, garlic powder, and black pepper evenly over the beef. I like to take a second here to make sure everything is well distributed so every bite gets that flavor.
Step 3: Add the liquid and peppers - Pour in the beef broth, then add the sliced pepperoncini peppers and the pepperoncini juice. Give it a gentle stir to combine everything. You will already start to smell that tangy savory goodness.
Step 4: Slow cook until tender - Cover and cook on low for 4 to 6 hours until the beef is fork tender. Every slow cooker runs a little different, so check it at the lower end of the time range. You want the beef to be soft enough that it almost falls apart when you stir it.
Step 5: Add the noodles - Stir in the uncooked egg noodles. Make sure they are mostly submerged in the liquid so they cook evenly. Cover and cook for another 30 minutes to 1 hour until the noodles are tender. Stir once or twice if you can.
Step 6: Finish with cream - Once the noodles are cooked, stir in the heavy cream. This is what turns the broth into that rich cozy sauce that coats every noodle. Let it sit for a few minutes to thicken up before serving.
Step 7: Serve and enjoy - Scoop into bowls and serve warm. This is the part where the table gets quiet and you know you did something right.