Short answer is yes, you can almost always substitute vegetable oil and canola oil for each other. Vegetable oil is made predominantly from soybean oil but it usually is a blend of oils from vegetables such as corn, olive, pumpkin seed, grape seed or even canola oil itself. read more
When a cake recipe or box mix calls for vegetable oil but there's none in the pantry, canola oil seems like a handy substitute. Canola oil substitutes for vegetable oil in most recipes, including cakes, while keeping just a few principles in mind. read more
Substitute canola oil measure for measure for vegetable oil in a brownie mix or recipe. For example, a typical box mix making 20 brownies might call for 1/2 cup of vegetable -- or in your case, canola -- oil. Concerns with substituting oils in a recipe come down to smoke point, or the temperature at which an oil burns, and flavor. read more