My grandma swore by these and I never believed her until I tried them myself. Only 3 ingredients and they come out perfect every single time

This Southern 3-Ingredient Mayonnaise Biscuits recipe is a masterclass in lipid-driven aeration and chemical-leavening kinetics. By substituting traditional solid fats (like butter or lard) with full-fat mayonnaise, you are utilizing a stabilized egg-yolk-and-oil emulsion. The self-rising flour provides the necessary leavening agents and salt, while the whole milk hydrates the starches. When this thick dough hits a preheated cast iron skillet, the rapid heat transfer triggers an immediate steam release and gas expansion, resulting in a biscuit with a tender, “cake-like” crumb and a crisp, savory exterior.

Southern 3-Ingredient Mayonnaise Biscuits

IngredientsL

Step-by-Step Directions:

Step 1: The Thermal Pre-Load: Preheat your oven to 425°F. Place a 9/10-inch cast iron skillet inside to heat.

Tip: Preheating the skillet is a vital mechanical step. When the wet dough hits the hot iron, it creates an immediate sear on the bottom. This “thermal shock” ensures the biscuits have a sturdy, golden crust that can support the soft, airy interior.

Step 2: The Emulsion Blend: Whisk the milk and mayonnaise together until smooth.

Tip: The mayonnaise is a structural necessity. Since mayo is already an emulsion, it distributes fat more evenly through the flour than cold butter chunks. This results in a remarkably consistent “short” crumb that stays moist longer than traditional biscuits.

Step 3: The Minimal-Handling Fold: Gently stir the wet mixture into the self-rising flour until just moistened.

Note: You are looking for a “thick and sticky” dough. Overmixing is a chemical risk; it develops the gluten in the flour, which will turn these from light, fluffy biscuits into tough, rubbery pucks.

Step 4: The Hot-Skillet Scoop: Carefully grease the hot pan and drop 1/4-cup portions of dough into it, ensuring they touch slightly.

Note: Touching “soft-sided” biscuits is a mechanical necessity. As they rise, they push against each other, forcing the expansion upward rather than outward, resulting in a taller, fluffier biscuit.

Step 5: The High-Heat Bake: Bake for 14/18 minutes until the tops are golden.

Tip: This final rest is a “viscosity” necessity. Let the biscuits sit for 3/5 minutes. This allows the internal steam to redistribute, ensuring the center is fully set and won’t be “gummy” when you pull them apart.