Keto Weight Watchers Portabella Mushroom Pizzas

Individual portabella mushroom caps transform into satisfying pizza alternatives with a savory spinach and mozzarella topping. These Weight Watchers-friendly pizzas deliver classic Italian flavors while keeping calories in check. The meaty mushroom base provides earthy richness that pairs beautifully with herbs and cheese. Perfect for weeknight dinners when you want comfort food without the guilt, or as an elegant appetizer for entertaining. The combination of fresh tomatoes and melted cheese creates that familiar pizza experience in a healthier format.
Ingredients
Instructions
- 1
Thaw frozen spinach then place between paper towels and press out the liquid
- 2
Chop spinach finely
- 3
Preheat oven to 350° F
- 4
In a mixing bowl, add spinach, basil, mozzarella cheese, and black pepper and stir to combine
- 5
Prepare mushrooms by cleaning and removing the stems
- 6
On a greased baking sheet, place the mushroom caps with the top side down
- 7
Using a basting brush, brush the mushroom caps with butter
- 8
Using a spoon, add approximately 2 tablespoons of the spinach mix into each mushroom
- 9
Sprinkle with diced tomatoes and salt
- 10
Bake in preheated oven approximately 12 minutes or until heated through
- 11
Cut mushroom in half before serving
Tips
Press spinach thoroughly to remove excess moisture - wet spinach will make pizzas soggy and prevent proper browning.
Choose firm portabella caps without dark spots for best texture and appearance after baking.
Good to Know
Refrigerate assembled pizzas up to 1 day before baking. Store baked pizzas up to 3 days refrigerated.
Can assemble mushrooms with spinach mixture up to 4 hours ahead. Add tomatoes and bake just before serving.
Serve immediately while cheese is melted. Cut each mushroom in half for individual portions.
Common Mistakes
Press spinach thoroughly to avoid watery pizzas that won't brown properly
Don't skip greasing the baking sheet or mushrooms will stick
Substitutions
Dairy-Free Swaps
General Alternatives
FAQ
Can I use fresh spinach instead of frozen?
Yes, use about 10 oz fresh spinach. Cook it down first, then drain and chop. Fresh spinach has more volume than frozen when raw.
How long will these keep in the refrigerator?
Store baked portabella pizzas up to 3 days refrigerated. Reheat in oven at 300°F for 5-8 minutes to restore crispness.
Can I freeze these portabella pizzas?
Freeze assembled but unbaked pizzas up to 2 months. Bake directly from frozen, adding 5-8 extra minutes to cooking time.