Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Heinen Mark

2. Date of Event Requiring Statement (MM/DD/YYYY) 10/28/2021

3. Issuer Name and Ticker or Trading Symbol

Better Therapeutics, Inc. [BTTX]

(Last) (First) (Middle)

C/O BETTER THERAPEUTICS, INC., 548 MARKET STREET, #49404

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director _____ 10% Owner
___X___ Officer (give title below) _____ Other (specify below)
See Remarks /

(Street)

SAN FRANCISCO, CA 94104

(City) (State) (Zip)

5. If Amendment, Date Original Filed(MM/DD/YYYY)

6. Individual or Joint/Group Filing(Check Applicable Line)

_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	6667 ⁽¹⁾⁽²⁾	D

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:
(1)	Pursuant to the Agreement and Plan of Merger, dated April 6, 2021, as amended (the "Merger Agreement"), by and among Mountain Crest Acquisition Corp. II ("Issuer"), MCAD Merger Sub Inc. ("Merger Sub") and Better Therapeutics, Inc. ("BTX"), on October 28, 2021, Merger Sub merged with and into BTX, with BTX surviving the merger as a wholly-owned subsidiary of Issuer (such merger and the other transactions contemplated by the Merger Agreement, the "Business Combination").
(2)	At the effective time of the Business Combination, each share of BTX common stock (including shares of BTX common stock resulting from the conversion of BTX preferred stock and BTX Simple Agreements for Future Equity) was converted into a right to receive the number of shares of Issuer common stock equal to the product of the number of shares of BTX common stock and 0.9475, with fractional shares rounded to the nearest whole share. Issuer subsequently changed its name to Better Therapeutics, Inc.

Remarks:
Head of Finance and interim Chief Financial Officer

Exhibit 24 - Power of Attorney

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Heinen Mark C/O BETTER THERAPEUTICS, INC. 548 MARKET STREET, #49404 SAN FRANCISCO, CA 94104			See Remarks