This is by far the best keto microwave bread I have ever tried. I’ve made lots of different versions of 90 second bread, trying to replicate the softness of a couple slices of bread. This one is a winner for several reasons, high on that list is the texture and the fewer number of ingredients compared to other recipes I’ve created.
There are literally only 5 ingredients in this lupin flour microwave bread and it it so soft and fluffy that I could eat it right out of the mug without having to toast it first, which is another first for me as far as microwave bread goes.
I stopped making 90 second bread in the microwave early on in my keto journey when I calculated the macros for the nut flours, the heavy cream and all the other ingredients and realised it was way too much fat and calories to meet my goals. If you want to lose weight on keto, eating too much fat can cause a stall, I’ve found.

New to the keto diet? Start here! This will help you to figure out how to stick to this diet and make it a lifestyle for you.
Keto Microwave Bread
The taste for me is also very light, allowing the ingredients to shine. Prior microwave breads I’ve tried always were dense and too heavy for sandwich making, so I used them as side dishes like so.

I served it up here with some chicken salad made from rotisserie chicken, which is a favorite quick keto dinner when I’m not in the mood to cook. As you can see, there isn’t even any butter on my bread since the salad was nice and moist. The Lupin Flour Bread was that delicious. You can make a whole loaf of lupin flour bread too!
Watch the video of me making this microwave bread above and make sure to follow me on TikTok!
Ingredients:
- 2 tbsp Lupin Flour
- 1 tsp baking powder
- 1 tbsp heavy cream
- 1 egg
- 1 tbsp melted butter
I start by melting my butter in the microwave for 30 seconds in the mug I’ll be using. Then I pile all other ingredients in, mix well, then nuke it for 90 seconds.
You can add other ingredients if you’d like, perhaps a bit of cheese, some garlic salt or some sweetener and vanilla for a quick microwave cake! But as is, this is great.

If you’re lost and not sure how to get started with the keto diet, this meal plan is for you. It’s a fool-proof guide to winning at the high-fat, low-carb lifestyle.

If you’re just starting the keto diet, a food journal specifically for keto like this one can help you to stay on track. Track your meals, macros, mood, fasting times and movement daily to spot helpful and harmful patterns that help you achieve your weight loss and health goals.

Keto Microwave Bread: Soft Lupin Flour 90 Second Bread
A quick and healthy side dish for chicken salad, scrambled eggs or to make avocade toast!
Ingredients
- 1 egg
- 1 tbsp heavy cream
- 1 tbsp melted butter
- 2 tbsp lupin flour
- 1 tsp baking powder
Instructions
Mix all ingredients well in a mug.
Microwave for 90 seconds.
Remove from mug, slice and enjoy!
You can toast this too with some butter for a delicious snack.
Nutrition Information:
Yield: 1Amount Per Serving: Calories: 273
I love having keto snacks at the ready. Try my favorite keto chocolate bars, bone broth and protein powders here. Use code ONANDOFFKETO for 10% off your order!


Looking for a more complete guide to start or stick to the keto diet? My Ketogenic Diet 101 eBook is a complete, all-in-one resource for the ketogenic diet. This book includes all the need-to-know info about the keto diet, how it affects lifestyle diseases like diabetes, obesity, and high blood pressure plus over 45 recipes, checklists, and grocery lists to get you started. Want the 5-day meal plan for free? Get it below when you enter your details.