Slow Cooker Mushroom-Onion Chuck Roast over Garlic Mashed Potatoes with Lemony Kale (Slow Cooker)

Set-it-and-forget-it comfort with a bright, Pacific Northwest twist: chuck roast turns spoon-tender in the slow cooker with onions and mushrooms, while a quick kale salad keeps the plate lively and fresh. Big-flavor, low effort, perfect for a busy night.

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Ingredients

Certified Angus Beef Choice Chuck Roast (1 Roast) 1 lb chuck roast $9.59 sale (1 lb)
Private Selection® Peruvian Gold Sweet Onion (3 lb bag) 1 medium onion, sliced $5.49
Simple Truth Organic® Whole White Mushrooms (8 oz) 8 oz, sliced (or halved if small) $3.00 sale
Organic Lacinato Kale 1/2 bunch (about 3–4 packed cups), stems removed, thinly sliced $2.99
Organic Russet Potatoes (or Organic Yukon Gold Potatoes) 1 lb potatoes, peeled and chunked $2.29/lb (russet) or $4.99/3 lb (Yukon)
Organic Garlic Bulbs (or Organic Garlic) 3 cloves, divided $2.79/3 ct or $6.99/lb
Olive oil (pantry) 1 tbsp —
Beef broth (pantry) 1 cup —
Tomato paste (pantry) 1 tbsp —
Worcestershire or soy sauce (pantry) 2 tsp —
Dried thyme or rosemary (pantry) 1 tsp —
Salt & black pepper (pantry) to taste —
Butter or milk (pantry) 1–2 tbsp butter + splash milk (optional for mash) —
Lemon (not listed) 1/2 lemon, juiced —
Optional: Dijon mustard (pantry) 1 tsp (for kale dressing) —

Instructions

Prep and sear (stove, optional but worth it): pat dry 1 lb chuck roast and season with 1 tsp salt and 1/2 tsp pepper. Heat 1 tbsp olive oil in a skillet over medium-high and sear roast 3–4 minutes per side until browned. Transfer to slow cooker.
Build slow cooker: add 1 sliced medium onion, 8 oz sliced mushrooms, 2 minced garlic cloves, 1 cup beef broth, 1 tbsp tomato paste, 2 tsp Worcestershire/soy sauce, and 1 tsp dried thyme/rosemary. Nestle seared chuck roast into the liquid.
Slow cook: cover and cook on HIGH 4–5 hours (or LOW 7–8) until fork-tender. Shred or slice the beef; taste and adjust salt/pepper. If you want thicker gravy, remove lid and cook on HIGH 10–15 minutes, or mash a few mushroom/onion pieces into the broth.
Mash potatoes (stove): about 30 minutes before serving, boil 1 lb peeled, chunked potatoes in salted water until very tender, 12–15 minutes. Drain. Mash with 1–2 tbsp butter and a splash of milk (or a little broth) plus 1 grated or finely minced garlic clove (optional). Season with salt and pepper.
Quick kale salad: toss 3–4 packed cups sliced lacinato kale with 1 tbsp olive oil, 1/2 tsp salt, juice of 1/2 lemon, and 1 tsp Dijon (optional). Massage 30 seconds to soften.
Serve: spoon shredded beef and mushroom-onion gravy over mashed potatoes. Add lemony kale salad on the side.

Health notes: ~700–850 kcal per serving depending on trimming and mashed potato portion. High protein; mushrooms add umami with low calories; kale adds fiber and vitamin K. To lighten: trim visible fat and use broth instead of butter in mash.

Drink pairing: Wine: Slow-cooked beef loves structured reds with acid and savory notes. Choose Washington Cabernet Sauvignon (blackcurrant, firm tannin) or Syrah (smoke/pepper). Local pick: Columbia Valley Cabernet Sauvignon from Chateau Ste. Michelle is widely available; for Syrah, look for WA labels from Walla Walla/Columbia Valley. Non-wine: cold brew black tea or a stout.

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