A sandwich, by definition, is a food item consisting of two (or more) slices of bread with something between them. One slice of bread can run upward of 100 calories and 15g of carbs, making carbs a heavily feared macro. But fear not—there are breadless alternatives that when paired with the right fixings can turn your favorite sub into a macro-friendly meal. Swapping out bread for produce options, like sliced eggplant and large mushroom caps, can significantly cut carbs and calories, while at the same time providing disease-fighting antioxidants, vitamins, and minerals.

Click on through to enjoy guilt-free, breadless sandwich ideas that are low in carbs and calories, delivering a hefty dose of muscle-building protein.