1 tablespoon olive oil
12 ounces frozen artichoke hearts, thawed and patted dry
2 cups baby spinach
3 cloves garlic, 2 chopped, 1 left whole
2 tablespoons plus 1 teaspoon freshly squeezed lemon juice
1/4 cup grated Parmigiano-Reggiano
3 tablespoons crumbled feta cheese
2 tablespoons fresh flat-leaf parsley leaves
1/4 teaspoon kosher salt
Freshly ground black pepper
2 tablespoons sea salt flakes
1 lime, zested
1 baguette, sliced into 16 rounds and toasted
4 radishes, very thinly sliced, for garnish