Slow-Roasted British Beef with Horseradish Cream

By AislePrompt Editorial · Published 2026-05-08 · Updated 2026-05-08

Tender slow-roasted beef served with a sharp horseradish cream sauce, capturing the essence of traditional British Sunday roasts. This British-inspired beef recipe, ready in about 105 minutes, pairs beef rib roast, olive oil, salt for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 3 lbs beef rib roast
• 2 tbsp olive oil
• 1 tsp salt
• 1 tsp black pepper
• 4 garlic cloves, minced
• 2 tsp fresh rosemary, chopped
• 1/2 cup heavy cream
• 2 tbsp prepared horseradish
• 1 tsp lemon juice

Know when the beef is done: thermometers under $100 → Best Instant-Read Thermometers for 2026: Fast, Accurate Picks Under $100

Instructions

1. Step 1: Preheat oven to 325°F. Rub 3 lbs beef rib roast with 2 tbsp olive oil, 1 tsp salt, 1 tsp black pepper, 4 minced garlic cloves, and 2 tsp chopped fresh rosemary evenly all over. Place roast on a rack in a roasting pan.
2. Step 2: Roast beef in the preheated oven for approximately 1 hour 30 minutes, or until internal temperature reaches 135°F for medium-rare, basting occasionally with pan juices.
3. Step 3: While beef rests, whisk together 1/2 cup heavy cream, 2 tbsp prepared horseradish, and 1 tsp lemon juice in a small bowl until smooth and slightly thickened.
4. Step 4: Slice the rested beef into 1/2-inch thick pieces and serve with the horseradish cream sauce drizzled on top or on the side for dipping.