The short answer is… yes. I use mushrooms all the time to accent a meal. I put them in my omelets, serve them along side a steak, sauté them with green beans, snap peas, or broccoli among other vegetables. I think they’re great. I don’t think it’s possible to add so many mushrooms to a meal or a recipe that you’ll pop over your carb limit for the day.
There are many varieties of mushrooms, and the most common types are naturally low in carbohydrates in their natural form.
For example, a 1-cup (96-gram) serving of raw, whole white button mushrooms contributes 3 grams of carbs to your day. A cup of raw oyster and shiitake mushrooms contains around 6 and 7 grams of carbs, respectively.
If you like portobello mushrooms, you’ll find around 3 grams of carbs in both a 1-cup (86-gram) serving of them diced, or an average mushroom cap you might use to make a meatless burgerCan You Eat Mushrooms on a Keto Diet? (healthline.com)