Savory Mug Cake With Leftover Beef (Quick 5-Minute Recipe)

Name: Savory Mug Cake With Leftover Beef (Quick 5-Minute Recipe)
Prep time: 3 min
Cook time: 2 min
Total time: 5 min
Ingredients: 1 egg; 1 tablespoon green onions, chopped; 1 tablespoon sundried tomatoes (full tablespoon), chopped; 3 tablespoons Paleo flour; 1/2 cup leftover shredded beef (about 55 grams); 1 tablespoon coconut aminos or leftover sauce from the shredded beef dish (see notes); 1/2 teaspoon onion powder; 1 teaspoon olive oil or remaining fat from the beef chuck roast ((see notes))

Jump to Recipe Print Recipe

This savory mug cake is a delicious way to turn leftover roast beef into a warm, protein-packed meal—all in under 5 minutes.

Perfect for busy weekdays or when you’re low on energy, this microwave mug meal is made with simple ingredients and is a hearty, satisfying bite.

I almost always have Dutch Oven Shredded Beef Chuck Roast leftovers in the fridge, which means I’m constantly looking for new ways to repurpose that juicy meat into quick, satisfying meals.

Like my Quick Leftover Shredded Beef Sandwich, this little microwave mug meal came together from a handful of extras I didn’t want to waste. It turned out to be the simplest thing—warm, comforting, and now also a family favorite.

It’s basically a mini, no-fuss pot pie in a mug that's also Paleo-friendly, high in protein, and ready in minutes. If you're ever wondering what to do with extra shredded meat (even chicken or pork), this leftover beef recipe hits the spot, and it's so easy to customize. Let's make it!

Jump to:

Why You'll Love This Recipe
Ingredients & Notes
How To Make It
Top Tips
Variations & Substitutions
Storage
Recipe FAQs
More Quick Meals To Make Next
📖 Recipe

Why You'll Love This Recipe

Quick & Easy: 5 minutes start to finish, no prep time needed.
A Great Leftover Beef Recipe: No waste, just flavor.
High in Protein: One large egg and beef make this mug meal filling and energizing.
Customizable: Add different vegetables, use leftover cooking liquid for flavor, or swap in other meats like chicken or pork.
Delicious Recipe: Great as a quick lunch, an easy dinner, or a post-workout single-serving meal in one mug.

Ingredients & Notes

See the recipe card for full information on ingredients and quantities.

Ingredients to make savory meaty mug cake.

Large egg: The binder that sets this mug cake and adds satisfying protein.
Leftover Shredded Beef: The main ingredient that add richness, flavor, and texture.
Green Onions: Adds a mild bite and color, perfect for savory mug recipes.
Sun-Dried Tomatoes: Add umami, saltiness, and a subtle sweetness. Use leftovers to make my Italian-Style Polenta Pizza.
Paleo Flour: Keeps it grain-free.
Coconut Aminos: Adds depth of flavor.
Onion Powder: Just ½ teaspoon adds lots of savory depth.
Olive Oil: A teaspoon helps keep the texture soft and moist (use leftover roast fat if you have it).

How To Make It

See the full recipe with measurements in the recipe card.

Steps to make savory meaty mug cake with leftover beef chuck roast.

Step One (Picture 1 above) - Combine the Ingredients: In a large microwave-safe mug, beat the egg lightly with a fork until smooth. Then add the remaining ingredients. Stir well to combine.

Step Two (Picture 2 above) - Microwave: Microwave on high for 1½–2 minutes or until the top is just set and firm to the touch. Let it sit for 30 seconds.

Step Three (Picture 3 above) - Enjoy Immediately: Enjoy straight from the mug or flip it out onto a small plate and serve with a side of greens like my Cilantro Cucumber Salad With Avocado & Pickles.

Top Tips

Use a Large Microwave-Safe Mug: Choose a large mug (12 oz or bigger) to give the batter space to rise as it cooks. This prevents overflow and ensures even cooking throughout.
Beat the Egg First: Lightly whisk the large egg before adding other ingredients. This helps everything combine more smoothly and gives the mug cake a better structure and texture.
Don’t Over-Mix: Just stir until everything is combined.
Use Leftover Cooking Liquid for Extra Flavor: If your roast beef has leftover sauce or cooking fat, swap it in for the olive oil or coconut aminos. It’s a perfect way to boost richness and reduce waste.
Chop the Add-Ins Small: Dice sun-dried tomatoes and vegetables into tiny cubes so they blend well with the batter. This helps the savory mug cake cook evenly and keeps every bite balanced.
Don’t Overcook: Microwave for 1½ to 2 minutes, but no more. Overcooking can make the texture rubbery or dry. The top should be just set—soft and tender when touched lightly.

Variations & Substitutions

No Paleo Flour? Use almond flour, or any gluten-free flour blend.
Add-Ins: Try chopped spinach, shallots instead of green onions, or a touch of tomato paste for richness.
Swap the Beef: Use leftover shredded chicken from my Fall-Off-The-Bone Poached Whole Chicken, ground turkey, or even pork.
Want it Cheesy? A teaspoon of Parmesan cheese will give it a creamy depth (not Paleo-friendly).

Storage

This savory mug cake is meant to be eaten right away.

Recipe FAQs

Do I need to grease the mug to make this savory mug cake?

No. If you’re flipping the mug cake out onto a plate, you can lightly grease it with coconut oil first. But I never had problems flipping any microwavable mug cakes, even when it wasn't greased.

Can I double the recipe for two servings?

Yes! Just use two mugs and microwave them one at a time for best results. Everyone can add their own slight customizations, if preferred.

Why doesn’t this need extra salt?

The leftover roast beef, sun-dried tomatoes, and coconut aminos already bring plenty of flavor. It almost tastes a bit like a healthy, meaty mug pizza. But feel free to adjust the seasoning as needed.

Can I make this mug cake recipe with raw beef?

No, this is meant as a quick leftover roast beef recipe. The beef should be fully cooked beforehand.

Is this a whole meal?

It’s definitely filling on its own, especially with the protein from the egg and beef. But you can absolutely pair it with something light. A simple salad or a cup of creamy soup like my Curried Cauliflower and Pumpkin Soup will definitely make it a full meal.