Put all the ingredients for the shrimp into a blender or a food processor. Blend on medium speed until they turn into a fine, sticky paste.
Assemble the toast
Roughly divide the paste into 6 equal parts. Spread one portion onto a piece of toast, right to the edges (see note 1).
Put sesame seeds onto a flat plate. With the shrimp paste side down, place the toast over. Gently press with your fingers to ensure sesame seeds are firmly stuck to the paste. Repeat to finish all pieces.
On a chopping board, cut each piece of toast twice diagonally into 4 triangles.
Fry the toast (see note 2)
Option #1 Pan-frying: Heat up oil (enough to cover the surface) in a pan over medium heat. When the oil is hot enough (use a sesame seed to test. It’s ready if the seed spins around quickly), put in the triangle pieces with the sesame seed side facing down. Flip over when the first side becomes golden. When the other side browns, remove it from the pan.
Option #2 Air-frying: Preheat the air fryer at 240°C/460°F for 3 mins. Brush a thin layer of oil over both sides of the toast. When the air fryer is ready. Place in a single layer over the crisper tray with the sesame side facing up. Cook for around 3 mins until it browns.
Video
Notes
I like leaving the crust of the toast on. However, please feel free to trim it off if you wish.
You may also try the traditional approach, deep-frying, if you wish. In this case, you would need a sufficient amount of oil and I suggest you put the toast in when the temperature reaches 190°C/375°F.