How to Make It
Cook spinach in microwave according to package directions; cool slightly. Place spinach in a clean kitchen towel. Squeeze until very dry.
Weigh or lightly spoon 5 ounces flour into a dry measuring cup; level with a knife. Combine flour, spinach, ricotta, and next 6 ingredients (through 1 egg) in a medium bowl. Stir gently just until combined.
Sprinkle 1/4 cup flour on a baking sheet. Drop ricotta mixture by tablespoonfuls onto floured pan to make about 36 dumplings. Sprinkle dumplings with remaining 1 tablespoon flour, and very gently shape each into a ball; gently roll on pan to lightly coat with flour. (Dumplings can be shaped ahead and stored in the refrigerator overnight.)
Place marinara in a large skillet over medium heat; cover and keep warm.
Bring a large pot of water to a boil. Reduce heat to medium-low. Add 9 dumplings to water; cook 5 to 6 minutes (do not boil). Remove dumplings from pan with a slotted spoon, and place in marinara; keep warm. Repeat procedure 3 times with remaining dumplings.
MyRecipes is working with Let's Move!, the Partnership for a Healthier America, and USDA's MyPlate to give anyone looking for healthier options access to a trove of recipes that will help them create healthy, tasty plates. For more information about creating a healthy plate, visit www.choosemyplate.gov.