Step 1

Preheat oven to 375 degrees. Lightly grease a foil-lined rimmed baking pan with nonstick spray; set aside.

Step 2

Combine ground beef, thawed brown rice, carrots, and cook and mashed sweet potato in a large bowl.

Step 3

Shape mixture into 1-to-1-1/2-inch balls. Place on a lightly greased, foil-lined rimmed baking pan.

Step 4

Bake for 12 to 18 minutes or until meatballs reach 165 degrees. Drain on paper towels; cool before serving.

Step 5

Store in an airtight container for up to 3 days in the refrigerator or up to 2 months in the freezer.