Take toast to a whole new level!
Cook fava beans in a medium saucepan of boiling salted water until tender, about 4 minutes. Using a mesh sieve, transfer to a colander set in a bowl of ice water. Drain and peel. Combine lemon juice, 2 Tbsp. oil, and half of fava beans in a medium bowl and lightly mash with a fork. Stir in the remaining fava beans; season with kosher salt and pepper.
Combine cucumbers and vinegar in a medium bowl; season with salt. Let sit until slightly softened, 10–12 minutes.
Toast the bread under a broiler or in a toaster. Tear burrata into pieces and divide among the slices of toast, top with fava the bean mixture, cucumbers, and basil. Sprinkle with sesame seeds, sea salt, and pepper. Enjoy!