Spinach French Onion Cob Dip with Caramelized Onions
A luscious dip combining tender spinach and deeply caramelized onions, baked on a fresh cob loaf for a perfect party appetizer. This australian-inspired snacks ready in about 75 minutes blends unsalted butter, medium, thinly sliced yellow onions, roughly chopped fresh spinach into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 280 calories and feeds 8, so a small batch covers several meals across the week without taking over the fridge. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 tbsp unsalted butter
- 3 medium, thinly sliced yellow onions
- 6 cups, roughly chopped fresh spinach
- 8 oz, softened cream cheese
- 1/2 cup sour cream
- 1 cup grated Swiss cheese
- 1/2 cup grated Parmesan cheese
- 3, minced garlic cloves
- 1 tsp salt
- 1/2 tsp black pepper
- 1 large (about 12 oz) fresh cob loaf
Instructions
- Step 1: Heat 2 tbsp unsalted butter in a large skillet over medium-low heat. Add 3 thinly sliced yellow onions and cook, stirring occasionally, for 30-35 minutes until the onions are deep golden brown and caramelized.
- Step 2: Add 3 minced garlic cloves and cook for 1 minute until fragrant. Stir in 6 cups roughly chopped fresh spinach and cook for 3-4 minutes until wilted and most moisture evaporates.
- Step 3: Remove the skillet from heat and transfer the onion-spinach mixture to a mixing bowl. Add 8 oz softened cream cheese, 1/2 cup sour cream, 1 cup grated Swiss cheese, 1/2 cup grated Parmesan cheese, 1 tsp salt, and 1/2 tsp black pepper. Mix well until fully combined.
- Step 4: Preheat oven to 350°F (175°C). Cut the top off the fresh cob loaf and hollow out the inside, leaving about a 1-inch thick shell.
- Step 5: Fill the hollowed cob loaf with the spinach and onion dip mixture, pressing it down gently to fill all spaces.
- Step 6: Place the filled cob loaf on a baking sheet and bake for 20 minutes until the cheese is melted and the dip is warmed through. Serve immediately.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Spinach French Onion Cob Dip with Caramelized Onions take to make?
Total time is about 75 minutes (20 min prep + 55 min cook). A small batch typically covers several meals in the week — store as the recipe directs.
How do I store leftover Spinach French Onion Cob Dip with Caramelized Onions?
Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.
Can I substitute ingredients in Spinach French Onion Cob Dip with Caramelized Onions?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Spinach French Onion Cob Dip with Caramelized Onions for a different number of people?
The recipe is written for 8 servings. Multiply each ingredient by (your serving target / 8). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Spinach French Onion Cob Dip with Caramelized Onions?
Australian snacks like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
