Dinner · Part 1 of 3: Ingredients
Sweet Pepper Butter Bottom Round Roast

- Prep
- Cook
- Total
- Serves
- 6
This is the slow-cooker dinner that practically makes itself. A well-marbled bottom round roast, a pile of sweet bell peppers and onions, and a whole stick of salted butter — that's the entire ingredient list.
The slow cooker does the rest, turning the beef fork-tender while the butter melts into a rich, glossy pan jus. It's the kind of meal that fills the house with a warm, savory aroma and delivers a deeply satisfying dinner with almost no effort.
This recipe is built on the 'dump it in and forget it' method. You don't sear the meat, you don't sauté the vegetables, and you don't stand over the stove. Just layer everything in the slow cooker, set it on low, and walk away.
Hours later, you come back to a pot roast that shreds like a dream, with peppers and onions that have melted into sweet, buttery strands. It's perfect for busy weeknights or lazy weekends when you want a hearty meal without the fuss.
Ingredients
- 3 1/2 lb beef bottom round roast
- 2 large bell peppers (1 red, 1 green), sliced into thick strips
- 1 large sweet yellow onion, sliced
- 1/2 cup salted butter (1 stick)
Why this recipe works
The slow cooker's low, moist heat breaks down the collagen in the bottom round roast, turning a tough, lean cut into fork-tender meat.
Cooking it low and slow allows the connective tissue to dissolve into gelatin, which enriches the cooking liquid and gives the beef a silky, melt-in-your-mouth texture. The lid traps steam, keeping the environment humid so the meat never dries out, even after hours of cooking.
The butter is the secret to the rich, golden pan jus. As it melts, it emulsifies with the meat juices and the natural sugars from the peppers and onions, creating a glossy, flavorful sauce that coats every bite. The butter also adds a subtle richness that rounds out the beef's deep flavor. This method is forgiving and foolproof — no browning, no deglazing, just patience.
Notes and substitutions
Choose a well-marbled bottom round roast, about 3 1/2 pounds, for the best texture. If your roast is larger or smaller, adjust the cooking time accordingly — a bigger roast needs more time, a smaller one less. The key is to cook until the meat is fork-tender, not just until it reaches a safe internal temperature. For this braise, the meat will go well beyond 145°F (63°C) to become shreddable.
Use a 6-quart slow cooker so the roast fits comfortably with the vegetables. If you have a smaller cooker, you can cut the roast in half. The peppers and onions should be sliced thick so they hold their shape during the long cooking time.
Sweet yellow onions are ideal, but any onion will work. Salted butter is specified because it seasons the dish as it melts; if you use unsalted, add a pinch of salt.
- beef bottom round roast: chuck roast or brisket (same weight) for a similar fork-tender result.
- salted butter: unsalted butter plus 1/2 teaspoon kosher salt, added with the butter.
- red and green bell peppers: any color bell peppers, or a mix of sweet mini peppers.
- sweet yellow onion: white or red onion, sliced the same way.
Equipment
- 6-quart slow cooker
- Tongs
- Serving spoon
- Cutting board
- Chef's knife
Up next · Part 2 of 3
5 steps · 8 h of cooking · what to look for at each stage
Step-by-step instructions (Part 2)