Feta Cheese Spread:

• 2 ounces crumbled feta cheese
• 2 tablespoons mayonnaise
• 2 teaspoons lime juice
• 1 sprig fresh mint, chopped
• 1 sprig fresh parsley, chopped

Burgers:

• 1 medium red bell pepper
• 1 pound lean ground beef
• 8 ounces fresh spinach – rinsed, drained and coarsely chopped
• 6 ounces crumbled feta cheese
• ¼ cup bread crumbs
• ¼ cup chopped onion
• 1 large egg, beaten
• 1 clove garlic, minced
• 3 sprigs fresh mint, coarsely chopped
• 2 sprigs fresh basil, coarsely chopped
• 2 sprigs fresh parsley, coarsely chopped
• salt and ground black pepper to taste
• 4 Kaiser rolls, split and toasted
• 1 medium tomato, sliced
• 4 leaves lettuce

Directions

1. Make the spread: Stir feta cheese, mayonnaise, lime juice, mint, and parsley together in a small bowl. Set aside until needed.
2. Make the burgers: Preheat the oven’s broiler and set the oven rack about 6 inches from the heat source. Line a baking sheet with aluminum foil.
3. Cut bell pepper in half from top to bottom; remove stem, seeds, and ribs. Place pepper onto the prepared baking sheet with the cut sides facing down.
4. Cook under the preheated broiler until the skin has blackened and blistered, about 5 minutes. Remove from the oven and transfer pepper halves to a paper bag to cool and steam, about 5 minutes.
5. Preheat an outdoor grill for medium heat, and lightly oil the grate.
6. Peel and discard bell pepper skin. Dice flesh and place into a large bowl.
7. Add ground beef, spinach, feta, bread crumbs, onion, egg, garlic, mint, basil, parsley, salt, and pepper; mix gently with your hands until evenly combined. Form meat mixture into four 4 1/2-inch-diameter patties.
8. Cook on the preheated grill until the burgers are cooked to your desired degree of doneness, about 4 minutes per side for medium. An instant-read thermometer inserted into the center should read 160 degrees F (70 degrees C).
9. Serve burgers on warm rolls with feta cheese spread, fresh tomatoes, and lettuce.