You’ll just have to be careful with how you cut the slices so the servings and macros are accurate. When I first created this recipe years ago, I called it a keto tuna melt. But then I realized ...

Top tuna with cheese, packing it on generously, and slide sandwiches under broiler. Broil until cheese melts and bubbles, 4-5 minutes. Remove tuna melts from broiler and serve immediately.