Combine flour, salt and pepper in a shallow bowl big enough to dredge cubed steaks in
Heat oil and butter in frying pan that is oven safe
Pat steaks dry and dredge in flour mixture on both sides
Fry steaks on both sides 5-6 minutes until a nice golden crust is formed
Remove steaks from pan, set aside while you make gravy
Add 4 Tablespoons of butter to pan along with 4 Tablespoons of your flour dredge, combine into a paste
Add 2 cups of liquid to rue and whisk to combine, scraping up bits from pan
Place steaks back in gravy and cover
Place frying pan with steaks in a preheated 350 degree oven for 20-30 minutes until steaks are fork tender