San Juan Burger with Caramelized Plantains and Toasted Coconut Butter - Sutter Home Family Vineyards

Ingredients

• 1/2 cup sweetened shredded coconut
• 1 1/2 sticks salted butter, room temperature, cut into pieces
• 2 tablespoons vegetable oil
• 2 tablespoons sugar
• 1 large black (ripe) plantain, peeled and cut into 1/4-inch thick slices on a diagonal
• 2 pounds ground chuck
• 1/4 cup finely chopped green onions
• 1/2 teaspoon ground cumin
• 2 cloves garlic, minced
• 1 tablespoon fresh mint leaves, finely chopped
• 1 1/2 teaspoons salt
• 1/2 teaspoon freshly ground black pepper
• Vegetable oil, for brushing on the grill rack
• 6 pieces Cuban bread, cut into bun-sized pieces
• 3 ounces baby spinach leaves