While the dressing comes together, prepare all your vegetables for maximum efficiency. Peel and slice the cucumber into 1/2-inch half-moons, halve the cherry tomatoes lengthwise, thinly slice the red onion, and dice the green bell pepper into bite-sized pieces. Roughly chop the fresh mint and measure out the kalamata olives and capers. Having everything prepped and ready will make assembly quick and ensure even distribution of flavors throughout the salad.

In a large mixing bowl, whisk together the red wine vinegar, oregano, salt, black pepper, and red pepper flakes. Mince the garlic cloves finely and add them to the bowl—the acid in the vinegar will gently soften the raw garlic and mellow its bite. Slowly whisk in the olive oil until the dressing emulsifies slightly and comes together. I like to taste the vinaigrette at this point and adjust the seasoning if needed, since it will be the foundation for the entire salad's flavor profile.

Drain and rinse the canned cannellini beans thoroughly to remove excess sodium and starch, then add them to the bowl with the vinaigrette. Add all the prepared vegetables from Step 1, then crumble the feta block by hand into the salad (crumbling rather than buying pre-crumbled feta gives you better texture and prevents clumping). Gently toss everything together with a large spoon or spatula, ensuring the vinaigrette coats all the ingredients evenly. The beans and vegetables will absorb the dressing flavors beautifully if you let the salad sit for at least 15-20 minutes before serving.

Give the salad a gentle stir and taste a forkful to check the seasoning. The feta will add saltiness, so adjust carefully—add a small pinch more salt or a splash of vinegar if needed to brighten the flavors. Serve chilled or at room temperature, as this salad actually tastes better when the flavors have had time to meld together.