Finely slice courgettes, aubergines, and tomatoes. Lay on trays with salt for an hour. Pat dry and sprinkle with pepper and thyme.
STEP 2
For the sauce, heat oil in a saucepan. Add onion, cook for 3 minutes, then add garlic and cook until soft. Add chopped tomatoes and water, then add butter, salt, and pepper. Simmer for 25-30 minutes.
STEP 3
Blend the sauce until smooth, then stir in herbes de provence and roasted peppers.
STEP 4
Assemble ratatouille by stacking slices starting with aubergine, followed by courgettes, tomatoes, and basil. Arrange tightly in the dish.
STEP 5
Bake covered at 170°C for 40 minutes. Uncover, brush with oil, and bake for an additional 15-20 minutes until browned. Garnish with basil.