Place chopped berries on a baking sheet then sprinkle with a little olive oil and toss to combine.
Place strawberries in oven and roast about 20-25 minutes - they're done when you see their juices exuded and the smell fills your kitchen; remove and allow to cool thoroughly.
Transfer berries and juices to a food processor.
Pulse a couple of times to break up the berries. Then add lemon zest, lemon juice, vinegar, olive oil, salt and pepper. Pulse a few times, then add basil at the end and pulse a few more times (it's important that the mixture is cool before adding the basil, otherwise the basil will turn brown).
Taste for seasoning, then transfer to a serving container.
Notes
This makes a relatively thick dressing. If you prefer it less thick, simply add a bit more olive oil or lemon juice before serving.
Recipe by My Delicious Blog at https://www.mydeliciousblog.com/roasted-strawberry-basil-dressing/