Place the tomatoes in a tall mixing bowl and puree with a blender. Cut the baguette into 12 very thin slices. Heat olive oil in a frying pan, fry the baguette slices in it until golden brown, turning them over. Remove from the pan and set aside. Peel and finely dice the shallots. Peel garlic and chop finely. Heat oil in a pot and fry shallots until translucent.
Add garlic and basil and fry briefly. Add tomato paste and sweat. Deglaze with tomatoes and stock, bring to the boil. Simmer at low heat for about 5 minutes. Season to taste with salt, pepper, paprika and sugar. Fill into plates, spread mozzarella in it, sprinkle with pepper and garnish with basil. Add roasted baguette slices extra