Picked up a waffle maker and tried the below recipe from lowcarbinspirations.com. I've never liked heated tuna but this recipe is delicious.

KETO TUNA MELT CHAFFLE RECIPE INSTRUCTIONS
https://lowcarbinspirations.com/keto-tuna-melt-chaffle/

Summary:
1 can Tuna 2.6 oz, drained
1/2 cup mozzarella cheese
1 egg
pinch salt

Nutrition:
Total Fat 3.5g
Total Carbohydrate 1.2g
Dietary Fiber 0.5g
Protein 20.8g

I used chunk lite tuna and added a pinch of pepper, cumin, and hot sauce for a little extra flavor. Awesome!