Prep: 15 mins (will need a waffle iron)
Cook: 5 mins
Total: 20 mins
Yield: 2 servings
1 roma (plum) tomato, thinly sliced
salt and ground black pepper to taste
2 teaspoons butter, softened
4 thickly-sliced pieces multigrain bread
1 teaspoon spicy brown mustard
1 cup fresh spinach, or to taste
4 slices part-skim mozzarella cheese
2 teaspoons chopped sweet onion
Step 1 - Preheat a waffle iron according to manufacturer's instructions.
Step 2 - Arrange tomato slices on a work surface, pouring off any excess juice. Season tomato slices with salt and pepper.
Step 3 - Spread 1/2 teaspoon butter onto 1 side of each bread slice. Lay 1 bread slice, butter-side down, in the hot waffle iron. Spread 1/2 teaspoon mustard onto bread slice in waffle iron; top with 1/4 cup spinach, 2 slices mozzarella cheese, 1 teaspoon onion, half the tomato slices, and 1/4 cup spinach, respectively. Lay 1 slice bread, butter-side up, atop the spinach layer.
Step 4 - Close waffle iron and toast sandwich until lightly browned, about 2 minutes. Repeat with remaining ingredients.
Per Serving: 284 calories; protein 18.6g; carbohydrates 24.2g; fat 14.3g; cholesterol 51.2mg; sodium 656mg.