A couple of cans placed in a saucepan are enough to weigh down these crispy sandwiches as they cook. Or use a countertop grill—a modern must-have for student apartment kitchens.
Combine spinach and feta cheese in bowl. Spread 1/3 cup mixture over bottom half of each roll, and top each with red pepper strip. Spread hummus on top halves of rolls.
Heat skillet over medium-high heat, or preheat countertop grill. Spray sandwiches with cooking spray. Set 2 sandwiches in pan, and top with saucepan weighed down with 2 cans. Cook 3 to 4 minutes on each side. Or press 5 minutes total in countertop grill. Repeat with remaining sandwiches.