Step 1: Sauté the Onion

• Heat bacon drippings or butter in a skillet over medium heat.
• Add diced onion and cook until soft and translucent, about 3–5 minutes.

Step 2: Create the Roux

• Sprinkle the flour into the skillet, stirring continuously to form a roux.
• Cook for 1–2 minutes, until the mixture turns a light golden brown.

Step 3: Add the Tomatoes

• Stir in the crushed or diced tomatoes, ensuring they are evenly combined with the roux.
• Let the mixture simmer for about 5 minutes to develop flavor.

Step 4: Incorporate the Liquid

• Gradually pour in the milk or chicken broth, whisking to prevent lumps.
• Continue cooking until the gravy thickens to your desired consistency.

Step 5: Season and Serve

• Add salt, pepper, and sugar (if needed) to taste.
• Serve warm over biscuits, rice, or your favorite Southern dish.