In a large skillet, heat vegetable oil over medium-high heat.
Brown roast on all sides in skillet.
Place roast in a shallow roasting pan.
Combine applesauce, brown sugar, mustard, and honey and spread over roast.
Top with rosemary and bake uncovered for 30 to 40 minutes (or until a thermometer inserted in tenderloin registers 155℉).
Notes
I definitely suggest an unsweetened and non-fruit flavored applesauce like strawberry or peaches when making this recipe. We normally just use the plain unsweetened version, but cinnamon applesauce would work wonderfully!