Three-Packet Garlic Butter Pork Sirloin Roast

This slow-cooker pork sirloin roast is the definition of set-it-and-forget-it cooking. With just three seasoning packets and a few pats of cowboy butter, you get a fork-tender, flavor-packed roast that simmers all day into a rich, savory gravy.

Serve it over buttered egg noodles for a comforting dinner that tastes like you spent hours in the kitchen, when really the slow cooker did all the work.

This recipe takes a humble pork sirloin roast and turns it into a melt-in-your-mouth centerpiece with almost no effort. The magic comes from three pantry staples: ranch seasoning, zesty Italian dressing mix, and brown gravy mix.

They create a savory, herby crust that melts into a luscious gravy as the pork cooks low and slow. A few slices of garlic-herb cowboy butter on top add richness and depth. The result is a tender, shreddable roast that pairs perfectly with buttered noodles or mashed potatoes.

Ingredients

Why this recipe works

The combination of three seasoning packets—ranch, Italian, and brown gravy mix—creates a deeply savory, slightly tangy flavor profile that infuses the pork as it cooks.

The ranch and Italian mixes bring herbs and garlic, while the gravy mix adds body and a rich, beefy note. Together, they form a crust on the roast that melts into a silky gravy during the long, slow cooking process.

Cooking the pork sirloin on low for 8 hours breaks down the connective tissue, turning a lean cut into a tender, shreddable roast. The cowboy butter, made with garlic and herbs, melts slowly over the meat, basting it as it cooks and adding a luxurious richness to the final gravy. This method requires zero hands-on time, making it perfect for busy weeknights.

Notes and substitutions

Pork sirloin roast is a lean, relatively inexpensive cut that benefits from slow cooking. It becomes tender and juicy when cooked low and slow.

If you prefer a fattier, even more forgiving cut, pork shoulder or pork butt works beautifully, though it may need an extra hour or two of cooking. The seasoning packets are standard pantry items; look for them in the salad dressing or gravy aisle.

The garlic-herb cowboy butter is a compound butter that can be store-bought or homemade. If making it at home, combine softened butter with minced garlic, chopped parsley, chives, and a pinch of salt, then roll into a log and chill. For a quicker version, simply slice regular butter and sprinkle with garlic powder and dried herbs before placing on the roast.

• pork sirloin roast: pork shoulder or pork butt (increase cook time by 1-2 hours)
• garlic-herb compound cowboy butter: 4 tablespoons salted butter mixed with 1 teaspoon garlic powder and 1 teaspoon dried parsley
• buttered egg noodles: mashed potatoes or rice

Equipment

• 6-quart slow cooker
• Measuring spoons
• Serving spoon
• Dinner plates