Start by heating the oven to 400 degrees.
Lay a piece of parchment paper on a flat baking tray.
Give the tofu a quick rinse and cut lengthwise into 2-3 layers, depending on which thickness you want for the triangles. Cut the block in half, then cut each half into triangles on a diagonal. Depending on the thickness you’ve chosen this will make either 12 or 8 triangles.
Piece by piece, drop each triangle in the ketchup marinade and flip it around until all sides are well coated.
Lay flat on the parchment paper and repeat until they are all done.
Bake on the bottom rack in the preheated oven for 20 minutes, then flip them over to cook the other side for 15 minutes, or until the pieces are starting to darken.
Add all ingredients in a bowl and whisk.
Dip the tofu triangles into the sauce or pour the sauce over the tofu.
Enjoy with your choice of noodles or rice & steamed green vegetables.