All ingredients ready? Let's begin!
Slice the tomatoes in half through the center. Place a box grater over a shallow bowl. Holding the tomato half by the uncut side with the palm of your hand, grate it over the large holes of the box grater.
The flesh and juices will run into the bowl and the skin should remain in your hand. Discard the skin. Do this for all 4 halves of the tomatoes. (See Notes and Tips for juicy tomatoes)
Move the top rack of your oven to about 5 inches below the broiler element. Preheat the broiler to high.
Slice the bread on a cutting board with a serrated bread knife. Brush or spoon each slice with a small amount of olive oil, approximately 1 ½ tablespoons divided.
Place the bread, oiled side facing up, on a wire rack that fits inside a rimmed baking sheet.
Place the pan in the oven and toast the bread until just golden and crispy, approximately 2 ½ minutes. Alternatively, you can place the bread right on the rack of your oven or toaster oven.
Remove the toast from the oven and place on the cutting board. Rub the toasted side of each slice with garlic until aromatic.
Place a spoonful of tomato pulp on the toast and spread it out to coat the bread evenly. You don’t need much so the bread stays crispy.
Drizzle with a little more olive oil. Sprinkle with salt and top with an anchovy fillet, if using.
Serve immediately.