How to Cook Costco Cauliflower Pizza Perfectly

Costco sells two popular cauliflower crust pizzas in the frozen food section: Kirkland Signature Supreme and Milton’s Roasted Vegetable.

Both are gluten-free options with a thin, crispy crust made from cauliflower rice.

The Kirkland version comes loaded with pepperoni, sausage, roasted vegetables, and a three-cheese blend.

Milton’s keeps it lighter with bell peppers, zucchini, onions, and mozzarella.

This guide covers three cooking methods with exact temperatures and times.

You’ll get the best results in 12-19 minutes depending on your approach.

Product Details

Product: Kirkland Signature Supreme Cauliflower Crust Pizza / Milton’s Roasted Vegetable Cauliflower Crust Pizza

Type: Frozen, ready-to-bake

Package Size: 2 pizzas per box (Kirkland: 19.4 oz each / Milton’s: 17 oz each)

Price: Kirkland $11.99 / Milton’s $13.99 at Costco (Updated January 2025)

Storage: Keep frozen at 0°F or below

Calories per Serving: Kirkland 310 per 1/4 pizza / Milton’s 230 per 1/4 pizza

Main Ingredients: Cauliflower, mozzarella cheese, rice flour, tapioca starch, egg whites, tomato sauce

Item Numbers: Kirkland #1630281 / Milton’s #1194639

Cooking Methods Comparison

Recommended Method: Conventional oven for the most consistent crispy bottom and melted cheese.

Method 1: Oven (Recommended)

The oven produces the best overall results with even heat distribution.

Total time runs 12-19 minutes at 425°F.

You’ll get a crispy crust with perfectly melted mozzarella and bubbling toppings.

Step 1: How Do You Prepare the Pizza?

Remove the pizza from the freezer and take off all packaging.

This includes the plastic overwrap and cardboard backing.

Instructions:

1. Take pizza directly from freezer (do not thaw)
2. Remove all packaging materials completely

Equipment: None needed for preparation

Step 2: What Temperature and Time Do You Use?

Preheat your oven to 425°F for at least 10-15 minutes.

A fully preheated oven prevents soggy crust.

Instructions:

1. Set oven to 425°F (220°C)
2. Wait for complete preheating before adding pizza
3. Place pizza directly on center oven rack

Temperature: 425°F

Time: Milton’s 12-15 minutes / Kirkland 17-19 minutes

Do not use a baking sheet or pizza stone.

The direct rack placement creates the crispiest bottom.

Step 3: When Do You Check the Pizza?

Check around the 10-minute mark for Milton’s or 14-minute mark for Kirkland.

Look for cheese starting to bubble and edges turning golden.

Instructions:

1. Monitor through oven window starting at halfway point
2. Watch for golden brown cheese with slight browning at edges

Checkpoint: At 10-14 minute mark depending on variety

Step 4: How Do You Know When It’s Done?

The pizza is ready when cheese turns golden brown and bubbles uniformly.

Crust edges should be crisp and slightly darker than the center.

Instructions:

1. Cheese should be melted completely with golden spots
2. Edges appear crispy and slightly browned
3. Let cool 2-3 minutes before slicing

Target Temperature: 165°F internal

Visual Indicator: Golden brown cheese, crispy edges, steam rising

Method 2: Air Fryer

The air fryer method works faster and creates extra crispy edges.

You’ll likely need to cut the pizza to fit most air fryer baskets.

Total time is 6-10 minutes at 400°F.

Step 1: How Do You Prepare the Pizza?

Most air fryers can’t fit a whole cauliflower pizza.

Cut it into slices or quarters before cooking.

Instructions:

1. Remove all packaging from frozen pizza
2. Cut pizza into pieces that fit your basket
3. Lightly spray basket with cooking spray

Equipment: Pizza cutter, cooking spray

Step 2: What Temperature and Time Do You Use?

Preheat air fryer to 400°F.

Cooking time is significantly shorter than oven method.

Instructions:

1. Set air fryer to 400°F
2. Arrange pizza slices in single layer without overlapping
3. Cook 6-10 minutes total

Temperature: 400°F

Time: 6-10 minutes

Step 3: When Do You Check the Pizza?

Check at the 5-minute mark.

Some air fryers run hotter than others.

Instructions:

1. Open basket at 5-minute mark to check progress
2. Look for cheese starting to melt and bubble

Checkpoint: At 5 minute mark

Step 4: How Do You Know When It’s Done?

Cheese should be fully melted with edges turning crispy.

The crust will be noticeably crunchier than oven method.

Instructions:

1. Cheese appears bubbly and golden
2. Crust edges are crispy and slightly darker
3. Let cool 1-2 minutes before eating

Visual Indicator: Golden cheese, extra crispy crust edges

Method 3: Grill

Grilling adds smoky flavor to the cauliflower crust.

This method takes longer but produces unique results.

Works best for outdoor gatherings when you don’t want to heat up the kitchen.

Step 1: How Do You Prepare the Pizza?

Remove all packaging while the grill preheats.

Keep pizza frozen until ready to place on grill.

Instructions:

1. Remove pizza from packaging
2. Keep on a clean surface near the grill

Equipment: Long-handled spatula, heat-resistant gloves

Step 2: What Temperature and Time Do You Use?

Preheat grill to 400°F with lid closed.

This creates an oven-like environment.

Instructions:

1. Preheat grill to 400°F
2. Place pizza directly on grill grates
3. Close lid immediately

Temperature: 400°F

Time: 15-20 minutes

Step 3: When Do You Check the Pizza?

Check at the 10-minute mark and rotate if needed.

Hot spots can cause uneven cooking.

Instructions:

1. Open lid briefly at 10-minute mark
2. Rotate pizza 180 degrees if one side is cooking faster

Checkpoint: At 10 minute mark

Step 4: How Do You Know When It’s Done?

Look for melted cheese and grill marks on the bottom.

The pizza should slide easily off the grates.

Instructions:

1. Cheese fully melted and bubbly
2. Bottom shows light grill marks
3. Remove carefully with large spatula

Visual Indicator: Golden cheese, light char marks on bottom

Safety and Quality Indicators

Food Safety:

• Internal Temperature: 165°F minimum
• Steam Check: Should steam when cut
• Thawing: Never thaw before cooking

Quality Indicators (Done Properly):

• Color: Golden brown cheese with slight browning at edges
• Texture: Crispy crust that holds its shape when lifted
• Temperature: Hot throughout, no cold spots
• Appearance: Bubbling cheese, steam rising

Signs of Overcooking:

• Blackened cheese or burnt edges
• Dry, crumbly crust texture
• Bitter or burnt smell

Serving Suggestions

Portion Size: 1/4 pizza per serving (4 servings per pizza)

Serving Ideas:

• Add fresh basil and red pepper flakes after cooking
• Drizzle with olive oil and balsamic glaze
• Serve alongside a fresh garden salad

Pairing Recommendations:

• Caesar salad or mixed greens
• Roasted vegetables like broccoli or asparagus
• Red wine (Pinot Noir or Chianti)

Looking for more Costco meal ideas? Try pairing your pizza night with mozzarella sticks from Costco as an appetizer.

For a complete Italian dinner, add Costco garlic bread on the side.

Storage and Reheating

Leftover Storage:

• Refrigerate within 2 hours of cooking
• Store in airtight container or wrap tightly in foil
• Consume within 3-4 days

Reheating Instructions:

• Oven: 400°F for 8-10 minutes
• Air Fryer: 350°F for 3-5 minutes
• Stovetop: Medium heat in covered skillet for 5-7 minutes
• Target Temperature: 165°F

Avoid microwaving if you want to keep the crust crispy.

Troubleshooting Common Issues

Issue: Soggy crust

Cause: Using a baking sheet or not preheating oven fully

Solution: Place pizza directly on oven rack and ensure oven reaches 425°F before adding pizza

Issue: Burnt edges with raw center

Cause: Oven running hot or pizza too close to heating element

Solution: Lower temperature by 25°F and position on center rack with 2 inches clearance from elements

Issue: Cheese not melting evenly

Cause: Uneven oven temperature or thawed pizza

Solution: Cook directly from frozen and rotate pizza halfway through if needed

Issue: Crust falls apart when slicing

Cause: Not enough resting time after cooking

Solution: Let pizza cool 2-3 minutes before cutting to allow crust to firm up

Product Variations and Related Items

Similar Costco Products:

• Sabatasso’s Gluten-Free Pizza – Traditional crust, 3-pack for $16.99
• Molinaro’s Cauliflower Pizza Kit – Make your own with fresh toppings

Cooking Time Adjustments:

Kirkland Supreme needs 17-19 minutes due to heavier toppings.

Milton’s cooks faster at 12-15 minutes with lighter vegetable toppings.

Add 2-3 extra minutes for convection ovens at the same temperature.

Which Method Should You Choose?

Choose Oven when:

• You want the most consistent results
• Cooking for 2-4 people
• You have 15-20 minutes

Choose Air Fryer when:

• Speed matters (6-10 minutes)
• Cooking single servings or slices
• You want extra crispy edges

Choose Grill when:

• Cooking outdoors
• You want smoky flavor
• Avoiding heating up the kitchen

Time Comparison: Air Fryer (6-10 min) < Oven (12-19 min) < Grill (15-20 min)

Texture Ranking: Air Fryer (crispiest) > Oven (balanced) > Grill (smoky char)

If you enjoy quick frozen meals from Costco, check out how to prepare Costco potstickers or Costco spring rolls for easy appetizers.

For other gluten-free dinner options, the Costco salmon burgers cook up fast and pair well with any side.

FAQ on How To Cook Costco Cauliflower Pizza

What Temperature Do You Cook Costco Cauliflower Pizza?

Set your oven to 425°F for both Kirkland Signature and Milton’s cauliflower crust pizzas.

This temperature creates the ideal balance between crispy crust and melted mozzarella cheese.

Always preheat fully before adding the frozen pizza.

How Long Does Costco Cauliflower Pizza Take to Cook?

Milton’s Roasted Vegetable pizza takes 12-15 minutes.

Kirkland Signature Supreme needs 17-19 minutes due to heavier toppings like pepperoni and sausage.

Watch for golden brown cheese as your visual indicator.

Should You Use a Baking Sheet for Cauliflower Pizza?

No. Place the pizza directly on the center oven rack.

Skipping the baking sheet allows hot air to circulate underneath, creating that crispy bottom crust everyone wants.

A pizza stone works too.

Can You Cook Costco Cauliflower Pizza in an Air Fryer?

Yes. Preheat the air fryer to 400°F and cook for 6-10 minutes.

You’ll likely need to cut the pizza into slices first since most baskets can’t fit a whole frozen cauliflower pizza.

Do You Thaw Costco Cauliflower Pizza Before Cooking?

Never thaw it. Cook directly from frozen.

Thawing introduces moisture that makes the cauliflower crust soggy instead of crispy.

The frozen pizza instructions specifically say to bake from frozen for best results.

Is Costco Cauliflower Pizza Gluten-Free?

Yes. Both Kirkland Signature and Milton’s Craft Bakers versions are certified gluten-free.

The crust uses cauliflower, rice flour, and tapioca starch instead of wheat.

Great for anyone following a gluten-free diet.

How Many Carbs Are in Costco Cauliflower Pizza?

Milton’s has 27 grams of carbs per quarter pizza serving.

Kirkland Signature contains 31 grams per serving.

These aren’t keto-friendly numbers, but they’re lower than traditional pizza crust options.

How Do You Make Costco Cauliflower Pizza Crust Extra Crispy?

Use the oven rack placement method without any baking sheet.

Fully preheat your oven to 425°F before adding the pizza.

Let it rest 2-3 minutes after cooking so the crust firms up before slicing.

Can You Cook Two Cauliflower Pizzas at Once?

Yes. Place both pizzas on the center rack with space between them.

Add 2-3 extra minutes to your cooking time.

Rotate them halfway through for even browning and consistent cheese melting.

How Do You Reheat Leftover Cauliflower Pizza?

Use your oven at 400°F for 8-10 minutes or air fryer at 350°F for 3-5 minutes.

Avoid the microwave. It makes the thin crust soggy and ruins the texture completely.

Conclusion

Learning how to cook Costco cauliflower pizza takes just a few tries to master.

The oven method at 425°F delivers the most reliable results for that crispy texture and perfectly melted cheese.

Air fryer works great when speed matters.

Both Kirkland Signature and Milton’s offer solid gluten-free frozen pizza options for quick weeknight dinners.

Just remember: cook from frozen, skip the baking sheet, and let it rest before slicing.

These simple techniques turn a healthy frozen dinner into something genuinely satisfying.