Preheat the oven at 340F or 170C.
In a bowl, add all the dry ingredients and mix until well combined.
Add all the wet ingredients and whisk until well combined. The batter is thick and smooth. Set aside.
Spoon the batter into the muffin mold until half full. In the video, I used silicone muffin mold (lightly greased) and it yielded 11 tuna muffins. I love to use silicone molds as they make removal of the muffins super easy.
Spoon the tuna fillings over the batter.
Bake at the middle rack for 20 to 25 minutes or until a wooden skewer comes out clean. However, please ensure that you prick the wooden skewer into the muffin area, not the filling for accuracy.
Cool for a bit as these tuna muffins taste great when still warm.
These tuna muffins can be refrigerated up to a week and frozen for months. It's best to wrap them individually before freezing. They can be reheated in the microwave or mini oven toaster.