Dijon Herb Lean Beef Sheet-Pan Dinner with Tomato & Cucumber
Roasting lean sirloin cubes alongside whole cherry tomatoes creates rich browned edges and juicy, blistered bites in just 15 minutes. The simple emulsion of Dijon mustard, olive oil, and dried oregano coats the beef thoroughly, building a savory pan glaze as everything cooks. Folding in cool, crisp cucumber slices right as the pan leaves the oven introduces a fresh crunch that balances the warm, tangy meat and bursting tomatoes.
Why this one works
- Sirloin cooks quickly at high heat while staying tender and juicy.
- Cherry tomatoes blister in the oven, creating a natural sauce with the pan juices.
- Dijon mustard and dried oregano provide a bright, savory seasoning without complicated marinades.
- Adding crisp cucumber slices just before serving gives a lively temperature and texture contrast.
What you’ll need
- 1 lb (450g) lean beef sirloin, cubed Cut into evenly sized bite-sized pieces so the cubes cook evenly without drying out.
- 2 cups (300g) cherry tomatoes Leave whole so they burst and release their sweet juices across the pan during roasting.
- 2 cups (300g) sliced cucumbers Slice into thin rounds or half-moons; add only after roasting to keep their fresh snap.
- 2 tbsp (30ml) Dijon mustard Provides acidity, tang, and helps the dried herb cling to the meat.
- 1 tbsp (15ml) olive oil Assists with browning on the sheet pan and loosens the mustard mixture.
- 1 tsp (2g) dried oregano Offers an aromatic, earthy herbal note that complements roasted beef and tomatoes.
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What to have nearby
- Rimmed baking sheet
- Small mixing bowl
- Whisk
- Chef's knife and cutting board
Step-by-step instructions
Whisk the Dijon coating in a small bowl, spread the beef and tomatoes directly onto the sheet pan, and roast in a hot oven until the beef is cooked through and the tomatoes have softened.
- 1Step 1
Preheat oven to 400F (200C).
- 2Step 2
Whisk Dijon mustard, olive oil, and oregano in a small bowl.
- 3Step 3
Place beef and tomatoes on a sheet pan; toss with the mustard mixture.
- 4Step 4
Roast for 15 minutes until beef is cooked through.
- 5Step 5
Remove from oven and toss in fresh cucumber slices immediately before serving.
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A few things worth knowing
- Spread the beef cubes and tomatoes into a single layer with space between them so they roast rather than steam.
- Cut the sirloin uniformly to ensure all pieces reach doneness at the 15-minute mark.
- Keep the sliced cucumbers chilled until the sheet pan leaves the oven to maximize the hot-and-cool contrast.
Ways to make it your own
- Garnish with cracked black pepper or finely chopped fresh parsley just before serving.
- Serve over a bed of mixed baby greens for an expanded warm-and-cool salad platter.
Serving suggestions
Plate this sheet-pan meal on its own for a light dinner, or pair it with warm flatbread, steamed grains, or roasted baby potatoes to soak up the savory pan juices.
Storage & reheating
Store any leftover beef and tomatoes in an airtight container in the refrigerator. For the best texture, keep extra sliced cucumbers separate and fold them in cold when reheating or serving chilled.
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
Should I peel the cucumbers before slicing?+
Peeling is optional. Leaving the peel intact adds extra color and crisp crunch, while peeling gives a softer bite.
Can I use grape tomatoes instead of cherry tomatoes?+
Yes, grape tomatoes roast similarly and will blister nicely in the 400F oven.
Why are the cucumbers added after roasting?+
Tossing the cucumbers in at the end preserves their crisp crunch and cool temperature against the warm roasted beef.
With minimal prep, bold Dijon flavor, and a satisfying contrast between roasted beef and cool cucumber, this sheet-pan dinner keeps weeknight cooking straightforward and flavorful.
Dijon Herb Lean Beef Sheet-Pan Dinner with Tomato & Cucumber
Tender cubes of lean beef sirloin and sweet cherry tomatoes roasted in Dijon and oregano, finished with crisp cucumber slices for a balanced meal.
Ingredients
- 1 lb (450g) lean beef sirloin, cubed
- 2 cups (300g) cherry tomatoes
- 2 cups (300g) sliced cucumbers
- 2 tbsp (30ml) Dijon mustard
- 1 tbsp (15ml) olive oil
- 1 tsp (2g) dried oregano
Instructions
- Preheat oven to 400F (200C).
- Whisk Dijon mustard, olive oil, and oregano in a small bowl.
- Place beef and tomatoes on a sheet pan; toss with the mustard mixture.
- Roast for 15 minutes until beef is cooked through.
- Remove from oven and toss in fresh cucumber slices immediately before serving.
Nutrition
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