Watermelon + cucumbers is one of the most refreshing combos of all time. Throw in some mint, red onion, and feta and toss it all with a very simple vinaigrette (just olive oil + red wine vinegar), and you’ve got yourself a mean summer salad. Feeds approx.: 4 people Ingredients: 1/4 cup extra-virgin olive oil 2 tbsp. red wine vinegar 1/2 tsp. salt 3 cups cubed seedless watermelon 1 cup medium cucumber, chopped 1 cup crumbled feta 1/2 cup red onion, thinly sliced 1/2 cup coarsely chopped…