Preheat the oven at 350ยบ F.
Place the bread slices onto a baking sheet and bake for about 10 minutes or until slightly golden and toasted, flipping the slices halfway through. Don't overtoast them, or they'll be too hard.
While the bread is in the oven, start to make the tomato confit. Heat the olive oil in a small pan over medium heat. Once the oil is hot, add the grated garlic into the pan followed by the capers and thyme. Give it all a good stir and simmer for about 30 seconds. Add the cherry tomatoes, and sprinkle with salt and pepper; toss to distribute the ingredients.
Bring the heat to low and let everything simmer for about 15 minutes, stirring occasionally. The tomatoes will burst and break down as they cook.
Once your bread is toasted and confit is ready, carefully spoon the confit evenly over the toasts. Top the toasts with sardine fillets as well as the capers from the can. Top with fresh basil and serve.