GF Snack Cake - Ratios for snack cakes. The ratio for quick bread or muffins is: 2 parts flour, 2 parts liquid, 1 part egg, 1 part fat. Fats: light sour cream, ricotta cheese or butter. Liquids: milk, coconut milk, mix. Adjust your ingredients to what you have on hand or for flavor or dietary preference. Using ratios also makes it easy to increase your batch size too.