Begin by using your fingers to gently break apart the ground beef into a large bowl.
Next, add the oats and seasonings to the meat.
Using clean hands, gently toss the ingredients together until evenly combined.
Pre-heat a large skillet over medium heat while your form the meatballs.
Form the mixture into meatballs, using a food scale to create 1-ounce portions (about 1 inch in size). This should yield approximately 16 meatballs. Alternatively, you can use a scoop or eyeball the mixture to create evenly sized meatballs.
Next, place the meatballs in a single layer in the preheated skillet.
Cook the meatballs, browning on all sides, for about 8 minutes.
Prepare the gravy sauce mixture; In a measuring cup, combine the cream of mushroom condensed soup with the milk. Use a fork or small whisk to mix until smooth.
Pour the creamy gravy mixture into the skillet with the browned meatballs and any pan drippings.
Use a spatula to stir and combine everything.
Reduce the heat to medium-low and simmer for 15 minutes, or until the meatballs are fully cooked through.
Serve the meatballs with cooked rice or creamy mashed potatoes and your favorite side dishes.