Keto Crab and Shrimp Seafood Bisque
This is pure luxury in a bowl — a velvety, buttery bisque loaded with sweet crab meat and plump shrimp, simmered in a rich, garlicky cream broth with a whisper of tomato and fresh herbs. Every spoonful is silky, savory, and tastes like it came from a high-end seafood restaurant.
High in protein, keto-friendly, and ready in 30 minutes — the kind of soup that turns an ordinary dinner into something special.
Why You'll Love This
Velvety, buttery bisque loaded with crab and shrimp
~28g protein per serving, only ~4g net carbs
One pot, 30 minutes, restaurant-quality
Impressive enough for guests, easy enough for weeknights
Amazing Protein Recipes
Keto Crab and Shrimp Seafood Bisque
- Prep10 min
- Cook20 min
- Total30 min
- Servings4 servings
- Calories345 kcal
- large pot
- stove
- knife
- cutting board
- measuring spoons
- spoon or ladle
Ingredients
Instructions
- Melt the butter in a large pot over medium heat. Add the onion and cook 3–4 minutes until soft.
- Add the garlic and tomato paste; cook 1 minute, stirring constantly, until fragrant and darkened.
- Pour in the seafood stock, scraping up the browned bits. Simmer 5 minutes.
- Stir in the heavy cream, Old Bay, paprika, and cayenne. Simmer gently 5 minutes — never boil.
- Add the shrimp and cook 3–4 minutes until pink and just cooked through.
- Gently fold in the crab meat and lemon juice. Warm 1–2 minutes — don't stir hard or the crab breaks apart.
- Taste and adjust salt and pepper. Serve hot, garnished with fresh parsley.
Notes & Tips
- Don't boil the cream: A hard boil can split the sauce — gentle simmer only.
- Fold, don't stir: Lump crab is delicate — fold it in gently at the very end so it stays in beautiful chunks.
- Tomato paste is key: Let it darken in the butter for a full minute — that's where the deep bisque flavor comes from.
- Shrimp last: Add them near the end so they stay plump and tender, never rubbery.
- Nutrition: Per serving (estimate): 380 calories, 27g fat.
- Fridge: Store airtight up to 2 days — seafood soups are best fresh.
- Reheat: Warm gently on the stove over low heat; never microwave on high (it toughens the shrimp).
- Freezer: Not recommended — cream-based bisques separate when frozen.
- The Secret to a Silky, Never-Grainy Bisque
- The secret is the tomato paste cook-down plus the gentle heat. Browning the tomato paste in butter builds a deep, complex base that no shortcut can match, and keeping the cream at a bare simmer — never a rolling boil — is what keeps the sauce silky instead of grainy. Patience on both steps is the whole recipe.
Variations & serving ideas
- Scallops: Add bay scallops with the shrimp for an even fancier bisque.
- Spicy: Add a diced jalapeño with the onion or extra cayenne.
- Dairy-light: Swap half the cream for seafood stock (thinner, but still delicious).
- Lobster version: Swap half the crab for cooked lobster meat for a special-occasion upgrade.
Nutrition Facts
Per serving · makes 4 servings
| Nutrient | Amount per serving |
|---|---|
| Calories | 345 kcal |
| Total fat | 31 g |
| Saturated fat | 19 g |
| Cholesterol | 146 mg |
| Sodium | 245 mg |
| Total carbohydrate | 4 g |
| Fibre | 0.4 g |
| Sugars | 1 g |
| Protein | 28 g |
Nutrition values are approximate and vary with brands and portion sizes.
Frequently asked questions
How long does it take to make Keto Crab and Shrimp Seafood Bisque?
About 30 minutes in total: 10 minutes of prep and 20 minutes of cooking.
What ingredients do I need for Keto Crab and Shrimp Seafood Bisque?
The key ingredients include shrimp, onion, garlic, tomato paste, old bay seasoning and paprika. The recipe card lists every ingredient with exact amounts.
How should I store leftovers?
Fridge: Store airtight up to 2 days — seafood soups are best fresh.
How many servings does this recipe make?
It makes 4 servings.
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