Melt the butter with the olive oil in a large frying pan over a medium-high heat. Add the prawns and garlic, then saute until they are opaque, about 3 minutes. Remove the prawns to a plate.
Increase the heat to high, then throw in the courgette. Stir it around for about 45 seconds, then scoot the zucchini to the edges of the pan. Throw in the corn and cook it for a minute, then push it to the edges of the pan. Throw in the grape tomatoes, stir them around for a minute, then sprinkle on some salt and pepper to taste.
Then throw the shrimp back in. Stir everything around for about 45 seconds, or until it's all combined and hot. Then pour it onto a big platter.
Sprinkle on the fresh basil and some Parmesan shavings then ... this is the best part ... squeeze the lemon all over the top. This adds a wonderful, indescribable freshness.
You can serve this with rice, with pasta or it's just perfect on its own.
Recipe courtesy Ree Drummond