Dijon Herb Lean Beef Sheet-Pan Dinner with Cauliflower
Cubed lean sirloin and cauliflower florets take on exceptional flavor when tossed with sharp Dijon mustard, olive oil, minced garlic, and aromatic dried rosemary. As they roast together at high heat, the mustard mixture clings to the vegetables and meat, creating savory caramelized edges while keeping cleanup down to a single pan.
Why this one works
- Everything roasts together on one rimmed baking sheet for easy cleanup
- Pungent Dijon mustard and earthy rosemary build a rich savory coating
- Cauliflower edges turn lightly browned and tender alongside the sirloin
- Lean beef sirloin cooks quickly when cut into bite-sized cubes
- A complete meal assembled with only a handful of pantry seasonings
What you’ll need
- 1.5 lb (680g) lean beef sirloin, cubed Cut into uniform bite-sized pieces so the meat cooks evenly in the oven.
- 1 large (600g) head cauliflower, cut into florets Trim into medium florets roughly matching the size of the beef cubes for balanced roasting.
- 3 tbsp (45ml) Dijon mustard Provides a sharp, tangy foundation that emulsifies with the oil and coats every piece.
- 2 tbsp (30ml) olive oil Helps roast the vegetables until golden and carries the garlic and herb aromatics.
- 1 tbsp (5g) dried rosemary Offers robust, piney herbal notes that hold up well to high-heat roasting.
- 2 cloves (10g) garlic, minced Mince finely so it disperses evenly throughout the mustard mixture.
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What to have nearby
- Large rimmed baking sheet
- Small mixing bowl
- Wire whisk
- Chef knife and cutting board
Step-by-step instructions
Whisking the wet seasonings and aromatics together before coating ensures every floret and piece of sirloin gets an even share of flavor before hitting the hot pan.
- 1Step 1
Preheat oven to 400F (200C).
- 2Step 2
In a small bowl, whisk mustard, oil, herbs, and garlic.
- 3Step 3
Toss beef and cauliflower in the mixture.
- 4Step 4
Spread on a rimmed baking sheet.
- 5Step 5
Roast for 20 minutes until beef is tender and cauliflower is golden brown.
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A few things worth knowing
- Spread the beef and cauliflower across the pan in a single layer without crowding so they roast rather than steam.
- Toss the ingredients thoroughly in the bowl to coat all the crevices of the cauliflower florets.
- Keep the sirloin pieces uniform so none overcook during the twenty-minute roast.
Ways to make it your own
- Garnish with chopped fresh parsley before serving for a touch of fresh green color.
- Sprinkle a small pinch of cracked black pepper over the finished pan before plating.
Serving suggestions
Dish the roasted sirloin and cauliflower straight from the pan alongside a simple mixed green salad dressed with vinaigrette, or serve with steamed rice or crusty artisan bread to catch any pan juices.
Storage & reheating
Transfer any leftover beef and cauliflower to an airtight container and refrigerate promptly. Reheat gently in a warm oven or skillet until heated through.
Nutrition notes
Nutrition is provided as a general estimate for the listed recipe. Brands, exact portions, and ingredient swaps can change the numbers.
Quick recipe answers
How small should the beef and cauliflower pieces be cut?+
Aim for bite-sized pieces roughly one to one-and-a-half inches across so both the meat and the florets cook through within the twenty-minute roasting window.
Can fresh rosemary be used instead of dried rosemary?+
Dried rosemary provides a concentrated herbal flavor, but if you prefer fresh, finely chop it before whisking into the Dijon mixture.
With its simple preparation and bold mustard-herb coating, this sirloin and cauliflower sheet-pan dinner delivers rich roasted flavor in just twenty minutes of oven time.
Dijon Herb Lean Beef Sheet-Pan Dinner with Cauliflower
Roast tender cubes of lean beef sirloin and cauliflower florets in a savory Dijon, garlic, and rosemary glaze on a single sheet pan.
Ingredients
- 1.5 lb (680g) lean beef sirloin, cubed
- 1 large (600g) head cauliflower, cut into florets
- 3 tbsp (45ml) Dijon mustard
- 2 tbsp (30ml) olive oil
- 1 tbsp (5g) dried rosemary
- 2 cloves (10g) garlic, minced
Instructions
- Preheat oven to 400F (200C).
- In a small bowl, whisk mustard, oil, herbs, and garlic.
- Toss beef and cauliflower in the mixture.
- Spread on a rimmed baking sheet.
- Roast for 20 minutes until beef is tender and cauliflower is golden brown.
Nutrition
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