Cheesy Gnocchi Florentine Recipe

Ingredients

• 1 box (9 oz) frozen spinach
• 1 tablespoon butter or margarine
• 1/4 cup chopped onion
• 1 tablespoon Gold Medal™ all-purpose flour
• 1 1/4 cups half-and-half or milk
• 1 package (16 oz) shelf-stable gnocchi
• 1 cup shredded Gruyere cheese (4 oz)
• 1/2 cup shredded Muenster cheese (2 oz)
• 1/8 teaspoon ground nutmeg
• 1 large plum (Roma) tomato, thinly sliced
• 1 teaspoon olive oil