Heat oven to 350°F.
Combine venison, tomatoes with green chilis, chopped onion, eggs, oatmeal, parmesan cheese, pepper, salt, and garlic powder in large bowl, mixing lightly but thoroughly.
Shape mixture into greased 8” x 4” loaf pan.
Place upper oven rack in 350°F oven.
Bake 60 minutes or until an instant-read thermometer inserted into center registers 160°F.
Let stand 10 minutes. Cut into slices and enjoy!