1-First step: Prep everything first Finely chop the onion, bell pepper, celery, and garlic before you start. Peel and devein the shrimp if needed, then pat them dry with paper towels. Measure out the butter, olive oil, flour, tomato paste, hot sauce, water, salt, black pepper, and Cajun seasoning so everything is ready to go. This kind of prep makes the whole process smoother and keeps the sauce from overcooking while you search for ingredients. Since this is a quick étouffée recipe, mise en place really matters.

2-Second step: Start the base Set a large skillet or sauté pan over medium heat. Add the butter and olive oil, then let the butter melt completely. Once the fat is hot, add the onion, bell pepper, and celery. Cook for about 6 to 8 minutes, stirring often, until the vegetables soften and the onion starts to look translucent. Add the garlic and cook for 30 seconds more, just until fragrant. You do not want the garlic to brown because it can turn bitter.

3-Third step: Build the sauce Sprinkle the flour over the vegetables and stir well so it coats everything evenly. Cook this mixture for about 1 minute, stirring constantly. This step helps remove the raw flour taste and gives the sauce a little body. Next, stir in the tomato paste, hot sauce, Cajun seasoning, kosher salt, and coarse ground black pepper. The tomato paste will darken slightly and coat the vegetables. That rich color is what gives this cajun shrimp étouffée its deep, savory look.

4-Fourth step: Add the liquid Slowly pour in the water while stirring. Add a little at a time at first so the sauce stays smooth. Keep stirring as the mixture comes together and starts to thicken. Bring the pan to a gentle simmer, then lower the heat to medium-low. Let the sauce cook for about 8 to 10 minutes, stirring now and then. It should thicken into a gravy-like texture that coats a spoon. If it gets too thick, add a splash more water. If it looks too thin, let it simmer a little longer.

5-Fifth step: Cook the shrimp Once the sauce looks ready, add the shrimp and stir gently so every piece gets coated. Cook for 3 to 5 minutes, depending on size, until the shrimp turn pink and opaque. For the best texture, do not walk away at this stage. Shrimp cook fast and can turn rubbery if they go too long. The shrimp are done when they curl into a loose C shape and feel just firm, not tight or rubbery.

6-Final step: Taste and serve Taste the sauce and adjust the seasoning if needed. Add a little more hot sauce for heat, a pinch more salt for balance, or a splash of water if the sauce needs loosening. Remove the pan from the heat once the shrimp are cooked through. Spoon the étouffée over hot cooked rice and serve it right away. If you want, finish with chopped parsley or sliced green onions for a fresh touch. Warm French bread on the side is also a smart move because the sauce is too good to leave behind.