7 Keto Work Lunches That Reheat in the Microwave

If you’re looking for EASY keto lunches you can prep ahead, take to work, and reheat in the microwave, here are several reliable options including Butter Burgers, Crusted Buttery Chicken Casserole, General Tso’s Chicken-style stir fry ideas, Ham and Cauliflower Rice Casserole, and more.

Sticking to a keto plan is much easier when you prepare meals in advance. A simple meal-prep routine—assemble a serving the night before, pack it in a microwave-safe container, and bring it to work—lets you enjoy a satisfying low-carb lunch without fuss. Below you’ll find a curated list of dependable microwave-friendly keto lunches that reheat well and travel easily. They’re flavorful, filling, and designed to help you meet your macros while saving time during the busy workweek.

Table of Contents

Keto Work Lunch #1: Meatloaf

(2g Net Carbs; 20g Fat; 17g Protein)

overhead view of sliced keto meatloaf with ketchup glaze on a white serving dish and carrots and broccoli on the side

Classic meatloaf is an ideal make-ahead meal: slice, pack, and reheat. It pairs well with steamed low-carb vegetables or a simple salad for a balanced work lunch.

#2: Butter Burgers

(0g Net Carbs; 10g Fat; 8g Protein)

triple stack of savory fat bomb in front of mixed greens

These butter burgers reheat beautifully and make a great protein-focused lunch. Serve on a bed of greens or with low-carb vegetables for a complete meal.

Keto Work Lunch #3: Crusted Buttery Chicken Casserole

(1.07g Net Carbs; 31g Fat; 26g Protein)

keto casserole dish with piece missing and butter on the bottom

This rich, flavorful casserole is simple to assemble and holds up well for reheating. It’s a great option when you need a satisfying, high-fat lunch to meet your keto macros.

#4: Keto Chicken Alfredo

(2.3g Net Carbs; 27g Fat; 39g Protein)

keto alfredo casserole served next to a large pile of bright green broccoli — **Keto Chicken Alfredo Casserole**

This cheesy Italian-style casserole is loaded with tender chicken and creamy sauce—great for reheating and keeping you full through the afternoon.

#5: Keto Stir Fry

(8g Net Carbs; 16g Fat; 22g Protein)

closeup view of keto stir fry with piece of chicken and vegetables on a fork — **Keto Chicken Stir Fry**

A stir fry is easy to portion into microwave-safe containers. Note this dish is more balanced between protein and carbs—add a fatty side or snack if you need extra fat for your daily macros.

#6: Keto Ham Casserole

(6g Net Carbs; 15g Fat; 18g Protein)

keto ham casserole in a white casserole dish next to a towel — **Keto Ham Casserole**

Ready in under 30 minutes, this ham-and-cheese casserole is hearty and flavorful. Peas and zucchini add texture while keeping the dish low carb.

#7: Chicken Parmesan Casserole

(2g Net Carbs; 19g Fat; 36g Protein)

sideview of keto chicken parmesan casserole in glass dish with black serving spoon scooping a serving — **Gluten Free Chicken Parmesan Casserole**

With just a few ingredients, this chicken parmesan casserole is a simple, protein-packed option that reheats well and travels easily.

#8: Keto Chicken and Broccoli Casserole

(5g Net Carbs; 25g Fat; 32g Protein)

closeup of small white bowl containing a serving of keto chicken broccoli casserole — **Keto Broccoli Chicken Casserole**

Creamy, filling, and vegetable-forward, this casserole makes a convenient, microwave-friendly lunch that delivers both protein and greens.

#9: Stuffed Bell Peppers

(8g Net Carbs; 17g Fat; 23g Protein)

overhead view of keto stuffed peppers on a white dish ready to be served and topped with melted cheese — **Keto Stuffed Bell Peppers**

Stuffed peppers are portable and visually appealing. They reheat well and are simple to portion for busy weekdays.

#10: King Ranch Chicken

(6g Net Carbs; 24g Fat; 19g Protein)

glass casserole dish with keto king ranch chicken casserole — **Keto King Ranch Chicken**

This Tex-Mex inspired casserole is flavorful and reheats evenly—an excellent choice for meal prep and packed lunches.

#11: Chicken Bacon Ranch Casserole

(5g Net Carbs; 31g Fat; 27g Protein)

overhead view of casserole dish with keto chicken bacon ranch casserole in it — **Keto Chicken Bacon Ranch Casserole**

Rich and savory, this casserole is a favorite for those who enjoy bold flavors and hearty portions during the workday.

#12: Cheeseburger Casserole

(6g Net Carbs; 36g Fat; 45g Protein)

keto ground beef cheeseburger casserole in serving dish — **Keto Cheeseburger Casserole**

This casserole packs familiar burger flavors into a low-carb, high-protein format that’s easy to portion for work lunches.

#13: Meatballs

(4g Net Carbs; 32g Fat; 25g Protein)

overhead view of keto meatlballs in marinara sauce topped with shredded parmesan cheese in a black skillet — **Keto Meatballs**

Meatballs in a low-carb marinara are convenient, portable, and satisfying—perfect when you want a comforting lunch that’s easy to reheat.

#14: Chicken & Zucchini Casserole

(4g Net Carbs; 22g Fat; 32g Protein)

sideview of serving of keto and low carb chicken and zucchini casserole on a white plate — **Chicken and Zucchini Casserole**

Light on carbs and full of protein, this casserole includes vegetables that help round out your meal while keeping it low carb.

More Easy Keto Lunches for Work

collage with four keto pizza recipes — **Keto Pizza**

keto grilled pork chops sliced open on a baking sheet — **Keto Pizza**

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I hope this roundup helps you simplify lunches during a busy week. If you found these make-ahead keto options useful, please share using your preferred social tools—thank you!

Keto Fast Food for Work Lunch

If you need a quick option and don’t have a packed meal, you can still follow keto-friendly choices at common fast-food spots by selecting low-carb bowls, bunless burgers, or grilled chicken options. Here are a few places with helpful guides:

Chipotle: opt for a burrito bowl with protein, cheese, salsa, and guacamole.
McDonald’s: order bunless sandwiches or breakfast items modified to remove carbs.
Burger King: choose flame-grilled burgers without the bun.
Chick-fil-A: select grilled chicken and low-carb sides.
Wendy’s: pick bunless burgers or protein-rich salads.

Meal prep pays off: pack meals in microwave-safe containers, label portions, and reheat gently to preserve texture and flavor. With a few favorite recipes on rotation, you’ll find it easy to maintain keto while enjoying variety at lunchtime.