Roast Beef and the Frog: A Savory Sunday Roast

Roast beef and the frog is a playful name for a roast dinner served with Yorkshire pudding, whose puffed shape can resemble a little frog. This version pairs simply seasoned beef with crisp-edged, tender-centered puddings, roast potatoes, and quick pan gravy for a hearty meal inspired by the British Sunday roast.

Ingredients

3 lb (1.36 kg) boneless beef top sirloin roast, tied if needed
1 tbsp (15 ml) neutral oil
1½ tsp (9 g) kosher salt
1 tsp (2 g) freshly ground black pepper
1 tsp (1 g) dried thyme, or 1 tbsp (3 g) fresh thyme leaves
2 lb (907 g) Yukon Gold or russet potatoes, peeled and cut into 1½-inch (4 cm) pieces
3 tbsp (45 ml) vegetable oil or beef drippings, divided
1 cup (125 g) all-purpose flour
3 large eggs (about 150 g without shells), at room temperature
1 cup (240 ml) whole milk, at room temperature
½ tsp (3 g) fine salt, for the batter
2 tbsp (16 g) all-purpose flour, for the gravy
2 cups (475 ml) low-sodium beef broth
1 tsp (5 ml) Worcestershire sauce
1 tsp (5 ml) Dijon mustard (optional)
1 tbsp (14 g) unsalted butter, optional

Instructions

Take the beef from the refrigerator 30 minutes before roasting so it loses some chill; keep it covered and do not leave it out longer than 2 hours. Heat the oven to 450°F (230°C). Pat the roast dry, then rub it with the oil, kosher salt, pepper, and thyme. Set it on a rack in a roasting pan, fat side up if there is a fat cap.
Roast the beef for 15 minutes at 450°F (230°C) to brown the outside. Reduce the oven to 325°F (165°C) and continue roasting. Begin checking the center with an instant-read thermometer after about 50 minutes at the lower temperature; cooking time varies with shape and starting temperature. For the USDA FSIS safe minimum, cook whole cuts of beef to 145°F (63°C) and rest at least 3 minutes. For a more evenly pink roast, many cooks remove it at that temperature, then rest it loosely tented with foil for 15 minutes. Do not use color alone to judge doneness.
While the beef roasts, make the batter. Whisk the flour and batter salt in a bowl. Add the eggs and milk gradually, whisking until smooth, then leave the batter to rest for at least 20 minutes. This rest lets the flour hydrate and helps the puddings bake evenly.
For the potatoes, put them in a saucepan, cover with cold water, and bring to a boil. Simmer for 8 minutes, then drain well and let them steam-dry for 5 minutes. Shake the pan gently to roughen their edges. Toss with 2 tbsp (30 ml) oil or beef drippings, then spread on a baking sheet. Roast at 425°F (220°C) for 45–55 minutes, turning once, until crisp and browned. If the beef is still in the oven, roast the potatoes on a separate rack and adjust the temperature when the beef comes out.
When the beef is cooked, transfer it to a board and rest it for 15 minutes. Raise the oven to 425°F (220°C). Divide the remaining 1 tbsp (15 ml) oil among six wells of a muffin tin, or use 1 tsp (5 ml) in each of six wells. Heat the tin in the oven for 5 minutes, until the oil is shimmering but not smoking.
Whisk the rested batter briefly, then carefully pour it into the hot wells, filling each about halfway. Bake for 20–25 minutes without opening the oven door, until the puddings are tall and deeply golden. They may puff unevenly, which is normal. Serve them promptly for the crispest texture.
Make the gravy while the puddings bake. Spoon off excess fat from the roasting pan, leaving about 2 tbsp (30 ml) drippings if available. Set the pan over medium heat, sprinkle in the 2 tbsp (16 g) flour, and stir for 1 minute. Gradually whisk in the broth, scraping up browned bits. Add Worcestershire sauce and Dijon, if using, and simmer 5–8 minutes until lightly thickened. Stir in butter if desired, then taste before adding extra salt. Slice the beef across the grain and serve with potatoes, puddings, and gravy.

Tips

Use a thermometer in the thickest part of the roast, away from the rack or any bone. Roast shape and oven accuracy affect timing, so treat the stated minutes as a guide rather than a doneness test.
For the best rise, make sure the batter is not cold and the fat is hot when it goes into the muffin tin. Pour carefully, and keep the oven door shut during baking.
If you do not have beef drippings, vegetable oil works for both the potatoes and puddings. It has a milder, less beefy flavor, but still gives the batter a crisp base.
Resting the beef makes it easier to carve and gives the juices time to settle. Slice only what you plan to serve right away, since sliced meat dries out more quickly in storage.

Serving Suggestions

Serve the roast with the potatoes and Yorkshire puddings while they are hot, with gravy passed at the table. Steamed peas, buttered carrots, roasted parsnips, or braised cabbage add a fresh or gently sweet counterpoint. A sharp horseradish sauce or English mustard can be offered alongside the beef; keep it separate so guests can season their own plates.

Variations

Top sirloin is a practical, fairly lean choice, but a tied rib roast or boneless rump roast also works; cooking time will change, so follow the thermometer rather than the clock. For a more traditional pudding flavor, replace some or all of the vegetable oil with rendered beef drippings. If you cannot use dairy, unsweetened plain oat milk can replace the milk, though the puddings may brown and taste slightly differently. For a smaller meal, halve the batter and bake it in three muffin wells, while keeping the beef temperature guidance unchanged.

Storage and Reheating

Refrigerate cooked beef, potatoes, and gravy within 2 hours, in separate airtight containers; cooked leftovers keep for 3–4 days in the refrigerator. Yorkshire puddings are best fresh, but can be stored separately for up to 2 days. Reheat beef and gravy gently in a covered pan with a splash of broth, or microwave in short intervals, until leftovers reach 165°F (74°C). Reheat potatoes and puddings in a 375°F (190°C) oven until hot; the oven restores more crispness than a microwave. Freeze sliced beef and gravy for up to 2–3 months for best quality, thawing in the refrigerator before reheating to 165°F (74°C).

Frequently Asked Questions

What does “the frog” mean in roast beef and the frog?
It is a playful description, not a separate ingredient: a puffed Yorkshire pudding can look like a little frog beside the roast. The phrase is not a standardized recipe name, so serving styles may vary.

Can I make the Yorkshire pudding batter ahead?
Yes. Cover it and refrigerate for up to 24 hours, then bring it toward room temperature and whisk briefly before baking. The oil in the tin still needs to be very hot when you add the batter.

Can I cook the beef and potatoes at the same time?
Yes, if your oven has room for both pans and air can circulate. Start the potatoes while the beef roasts, then adjust the oven when the roast comes out. If the potatoes need more time, leave them in while the oven heats to 425°F (220°C) for the puddings.

Why did my Yorkshire puddings not rise?
Common causes are batter that is very cold, fat that was not hot enough, or opening the oven door during baking. Check that the oven has reached temperature and that the batter goes straight into shimmering hot oil.

Can I use a different cut of beef?
Yes. Rib roast, rump roast, and top round can all be roasted, but leaner cuts may become dry if cooked beyond your preferred doneness. Use a thermometer in the thickest part and follow the safe-minimum temperature and rest guidance in the instructions.

How do I keep the meal warm if the puddings finish first?
Serve the puddings as soon as they are baked for the best texture. Keep the rested beef loosely covered and the gravy warm over low heat; avoid holding the beef at room temperature for more than 2 hours.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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