How Long to Cook Bottom Round Roast
2 cooking methods with times, temperatures, and tips. Safe to 145°F (USDA FSIS) ?
Quick Answer
Bottom Round Roast takes 120-180 minutes to cook using the Roast method at 300°F. The safe internal temperature is 145°F (63°C) according to USDA FSIS guidelines. This page covers all 2 cooking methods with complete time and temperature charts for each.
Key Takeaways
- Bottom Round Roast takes 120-180 minutes using the Roast method at 300°F
- Safe internal temperature: 145°F (63°C) per USDA FSIS guidelines
- 2 cooking methods available with complete time and temperature charts
- From frozen: add 50% more time (approximately 180-270 minutes)
- Rest for 15 minutes after cooking before serving
- Always verify doneness with a meat thermometer
What Is the Best Way to Cook Bottom Round Roast?
Bottom Round Roast can be cooked using 2 different methods, including Roast, Slow Cooker. The most popular method is Roast at 300°F, which takes 120-180 minutes. The USDA FSIS recommends cooking bottom round roast to an internal temperature of 145°F (63°C) for food safety. After cooking, let bottom round roast rest for 15 minutes to allow juices to redistribute.
The USDA reports that ground beef must reach 160°F internally, while whole cuts like steaks can be safely consumed at 145°F with a 3-minute rest.
Bottom Round Roast Cooking Times at a Glance
The table below shows the recommended cooking time for bottom round roast across all 2 methods. Always verify the internal temperature reaches 145°F with an instant-read thermometer before serving. Toggle between fresh and frozen cooking times using the fresh/frozen switch on this page.
| Method | Temperature | Cook Time | Notes |
|---|---|---|---|
| Roast | 300°F | 120-180 min | Preheat before cooking. |
| Slow Cooker | low | 480-600 min |
Rest for 15 minutes before serving
Resting allows juices to redistribute for a moister result. The internal temperature will rise 3-5 degrees during the rest.
How Long to Cook Bottom Round Roast in Roast
Bottom Round Roast takes 120-180 minutes in the roast at 300°F. Preheat your roast before adding bottom round roast for even cooking. Use a meat thermometer to verify the internal temperature reaches 145°F before removing from heat.
| Temperature | Cook Time | From Frozen | Notes |
|---|---|---|---|
| 300°Frecommended | 120-180 min | ~180-270 min | Low and slow for a lean cut, 3 lb roast |
| 325°F | 90-150 min | ~135-225 min | Slightly faster roast |
Roast Tips for Bottom Round Roast
- Braise or roast low and slow for best results
- Add liquid to the pan to keep it moist
- Slice very thinly against the grain
How Long to Cook Bottom Round Roast in the Slow Cooker
Bottom Round Roast takes 480-600 minutes in the slow cooker at low. Use a meat thermometer to verify the internal temperature reaches 145°F before removing from heat.
| Temperature | Cook Time | From Frozen | Notes |
|---|---|---|---|
| lowrecommended | 480-600 min | ~720-900 min | 8-10 hours on low for fork-tender results |
Slow Cooker Tips for Bottom Round Roast
- Add broth and vegetables
- Cook until easily shreddable
- Great for French dip sandwiches
How to Tell When Bottom Round Roast Is Done
The most reliable way to check if bottom round roast is done is with an instant-read meat thermometer. Insert it into the thickest part, avoiding bone, and look for an internal temperature of 145°F (63°C).
Without a thermometer, look for these visual cues: the juices should run clear (not pink), the flesh should be opaque throughout, and the texture should feel firm when pressed. However, visual checks are less reliable than a thermometer, especially for thicker cuts.
Remember that carryover cooking will raise the internal temperature by 3-5 degrees after you remove bottom round roast from the heat. You can pull it at 142°F and let it rest for 15 minutes to reach the target.
How Long to Cook Bottom Round Roast from Frozen
You can cook bottom round roast directly from frozen, but expect to add approximately 50% more cooking time. For example, if fresh bottom round roast takes 120-180 minutes, frozen will take roughly 180-270 minutes using the same method and temperature.
Always verify the internal temperature reaches 145°F with a thermometer, as frozen items can cook unevenly. The outside may look done while the center is still cold.For best results, thaw bottom round roast in the refrigerator overnight before cooking. If you need to thaw quickly, seal it in a leak-proof bag and submerge in cold water, changing the water every 30 minutes.
Bottom Round Roast Cooking Time by Weight
The cooking time for bottom round roast varies based on weight. Use the calculator below to adjust the time for your specific cut. The times shown are for the Roast method at 300°F.
Adjust for Weight
Adjusted cooking time
120-180 min
Bottom Round Roast Cooking Time by Size and Temperature
Cooking time for bottom round roast varies significantly based on size. The chart below shows estimated times across different temperatures and portion sizes using the Roast method. Regardless of size, always verify the internal temperature reaches 145°F.
| Roast Temp | Small~32 oz | Standard~48 oz | Large~80 oz |
|---|---|---|---|
| 300°Frec. | 98-147 min | 120-180 min | 155-232 min |
| 325°F | 73-122 min | 90-150 min | 116-194 min |
Times are estimates based on standard home equipment. Actual cooking time depends on your specific appliance, starting temperature, and cut thickness.
Bottom Round Roast Kitchen Timer
Kitchen Timer
150:00
150 min preset
How to Store Leftover Bottom Round Roast
Refrigerate cooked bottom round roast within 2 hours in a sealed container. It will keep for 3-4 days in the refrigerator or up to 3 months in the freezer. Slice before storing for faster, more even reheating.
Common Mistakes When Cooking Bottom Round Roast
Avoid these common errors to get the best results when cooking bottom round roast:
- Not using a meat thermometer -visual checks alone are unreliable. Always verify bottom round roast reaches 145°F internally.
- Skipping the rest -cutting into bottom round roast immediately releases juices. Rest for at least 15 minutes after cooking.
- Overcrowding the pan or tray -this traps steam and prevents browning. Cook bottom round roast in a single layer with space between pieces.
- Cooking straight from the refrigerator -let bottom round roast sit at room temperature for 15-20 minutes before cooking for more even results.
- Not preheating -whether using an oven, air fryer, or grill, always preheat to the target temperature before adding bottom round roast.
Cooking Bottom Round Roast: What You Need to Know
Red meat like bottom round roast gets its tenderness from two processes: collagen breakdown and fat rendering. At temperatures below 150°F, collagen slowly converts to gelatin, creating a moist and tender result. Above 160°F, muscle fibers contract rapidly and squeeze out moisture, which is why well-done bottom round roast is drier than medium-rare. The Maillard reaction, which creates the flavorful brown crust, requires surface temperatures above 300°F, making a hot sear critical before or after the main cook.
Bottom Round Roast can be prepared 2 ways: Roast, Slow Cooker. The most popular method is Roast, which offers the best balance of convenience and results for most home cooks.
Common Mistakes When Cooking Bottom Round Roast
- Not using a meat thermometer. Color is unreliable for judging doneness of bottom round roast. An instant-read thermometer is the only accurate way to verify the internal temperature has reached the safe minimum.
- Cutting into bottom round roast immediately after cooking. Resting allows the muscle fibers to relax and reabsorb juices. Slicing too early causes those juices to run out onto the cutting board instead of staying in the meat.
- Overcrowding the pan or air fryer basket. When pieces of bottom round roast are too close together, steam builds up instead of escaping, preventing browning and extending cook time.
- Cooking straight from the refrigerator. Taking bottom round roast out 15 to 20 minutes before cooking allows it to approach room temperature, which promotes more even cooking from edge to center.
Why 145°F? The Science of Safe Cooking Temperature
The USDA recommends 145°F as the minimum safe temperature for bottom round roast. For steaks and roasts (whole-muscle cuts), 145°F with a 3-minute rest is sufficient because bacteria only exist on the surface, which is killed by searing. Ground bottom round roast requires 160°F because grinding distributes surface bacteria throughout the meat. Always use a thermometer rather than relying on color, as ground meat can turn brown before reaching a safe temperature.
Why Resting Bottom Round Roast for 15 Minutes Matters
When bottom round roast is removed from heat, the outer portions are significantly hotter than the center. During the 15-minute rest period, heat continues to migrate inward (carryover cooking), raising the center temperature by 5 to 10 degrees while the exterior cools slightly. Simultaneously, muscle fibers that were tightly contracted during cooking begin to relax, allowing them to reabsorb juices that were squeezed toward the center. Cutting into bottom round roast before this process finishes means losing those juices onto the cutting board.
Storage and Leftovers
Cooked bottom round roast can be refrigerated in an airtight container for 3 to 4 days. For longer storage, freeze in freezer-safe bags for up to 3 months. Always cool cooked bottom round roast to room temperature within 2 hours before refrigerating (1 hour if the ambient temperature exceeds 90°F). When reheating, ensure the internal temperature reaches 165°F regardless of the original safe cooking temperature.
Frequently Asked Questions
How long does it take to cook Bottom Round Roast?
Bottom Round Roast takes 120-180 minutes using Oven at 300°F. Alternatively, 480-600 min via Slow Cooker. Let it rest 15 minutes before cutting.
What temperature should Bottom Round Roast be cooked to?
Bottom Round Roast must reach 145°F (63°C) internally per USDA FSIS guidelines. Insert the thermometer into the thickest part, avoiding bone. The temperature will rise another 3-5°F during the 15-minute rest.
What is the best method to cook Bottom Round Roast?
Roast is the most common method for Bottom Round Roast (120-180 min at 300°F). Braise or roast low and slow for best results.
Can I cook Bottom Round Roast from frozen?
Yes. Expect 180-270 minutes from frozen (roughly 1.5x the thawed time). Preheat your oven before starting. The internal temperature must still reach 145°F regardless of starting state.
How do I know when Bottom Round Roast is done?
Use an instant-read thermometer - Bottom Round Roast is done at 145°F (63°C) in the thickest part. Color alone is unreliable because browning depends on heat source, not internal doneness.