Step 1: Cook the bacon - Start by heating a skillet over medium heat. Add the chopped bacon and cook until it turns crispy and golden. Take your time here because this step builds the foundation of the flavor.
Step 2: Soften the onions - Once the bacon is cooked, add the diced onion right into the same skillet. Let it cook for about 2 to 3 minutes until it softens and becomes fragrant. The onion will soak up some of that bacon flavor, which is exactly what you want.
Step 3: Transfer to the slow cooker - Carefully move the bacon and onion mixture into your slow cooker. Try not to leave too much of that good flavor behind in the pan.
Step 4: Add the beans and seasonings - Pour in the baked beans, then sprinkle in the ranch seasoning mix and the brown gravy mix. Give everything a gentle stir so it starts to come together.
Step 5: Add the tangy elements - Stir in the sliced pepperoncini peppers and the pepperoncini juice. This is where the dish gets its signature brightness that balances all the richness.
Step 6: Sweeten things up - Add the brown sugar and stir again. This helps round out the flavors and gives the beans that classic sweet and savory balance.
Step 7: Add the butter - Place the slices of butter right on top of the mixture. As it melts, it will work its way through the beans and create a smooth, rich sauce.
Step 8: Slow cook to perfection - Cover and cook on low for 4 to 5 hours. Give it a stir once or twice during cooking if you’re nearby, but don’t worry if you forget. The slow cooker will take care of it.
Step 9: Final stir and serve - By the end of cooking, the sauce will be thick and rich. Give everything a good stir before serving and take a moment to enjoy that aroma.