Cheese and Spinach Cauliflower Casserole

By AislePrompt Editorial · Published 2026-05-14 · Updated 2026-05-14

A creamy, cheesy cauliflower casserole with fresh spinach, perfect as a comforting keto-friendly side or main. This American-inspired keto recipe (low carb), ready in about 45 minutes, pairs cauliflower florets, fresh spinach, cream cheese for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 6, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. 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

• 5 cups (about 1 medium head) cauliflower florets
• 3 cups, chopped fresh spinach
• 6 oz softened cream cheese
• 1/2 cup heavy cream
• 1 1/2 cups shredded cheddar cheese
• 1/4 cup grated parmesan cheese
• 1 tsp garlic powder
• 1 tsp salt
• 1/2 tsp black pepper
• 2 tbsp butter

Baking dishes worth owning for casseroles like this → Best Bakeware for 2026: Top Picks + Buying Guide

Instructions

1. Step 1: Preheat oven to 375°F. Steam 5 cups cauliflower florets until tender, about 8-10 minutes, then mash coarsely with 2 tbsp butter.
2. Step 2: In a mixing bowl, combine the mashed cauliflower, 3 cups chopped fresh spinach, 6 oz softened cream cheese, 1/2 cup heavy cream, 1 tsp garlic powder, 1 tsp salt, and 1/2 tsp black pepper. Mix until smooth.
3. Step 3: Stir in 1 cup shredded cheddar cheese until evenly distributed.
4. Step 4: Transfer the mixture to a greased 9x9-inch baking dish and top with remaining 1/2 cup shredded cheddar and 1/4 cup grated parmesan cheese.
5. Step 5: Bake uncovered for 20-25 minutes, until the top is golden and bubbly. Let rest 5 minutes before serving.